Mobility management in integrated UMTS/WLAN networks

Varma, V.K.; Ramesh, S.; Wong, Kai-Kit; Barton, M.; Hayward, G.; Friedhoffer, J.A.

doi:10.1109/icc.2003.1204514

Cited by 104 publications

(65 citation statements)

References 3 publications

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“…In [11], we assumed tight coupling between different layers of wireless network [26] in a cluster, where the management of different layers is centralized. However, when overlay can comprise mesh networks with multiple APs, it is impractical to assume centralized control, because the network management traffic overhead will be excessively high.…”

Section: B Call Handling Policymentioning

confidence: 99%

Structured Admission Control Policy in Heterogeneous Wireless Networks with Mesh Underlay

Farbod

Liang

2009

Ieee Infocom 2009

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Abstract-In this paper, we investigate into optimal admission control policies for Heterogeneous Wireless Networks (HWN), considering an integration of wireless mesh networks with an overlaying cellular infrastructure. In order to characterize the overflow traffic from the underlaying mesh to the overlay, a Partially-Observable Markov-Modulated Poisson Process (PO-MMPP) traffic model is developed. This model captures the burstiness of the overflow traffic under the imperfect observability of the mesh network states. Then, by modeling the overlay network as a controlled PO-MMPP/M/C/C queueing system and obtaining structured decision theoretic results, it is shown that the optimal control policies for this class of HWNs can be characterized as monotonic threshold curves. Further, these results are used to design a computationally efficient algorithm to determine the optimal policy in terms of thresholds. Numerical observations suggest that the proposed algorithm is efficient in terms of time-complexity and can drastically reduce the cost of dropped and blocked calls.

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Section: B Call Handling Policymentioning

confidence: 99%

Structured Admission Control Policy in Heterogeneous Wireless Networks with Mesh Underlay

Farbod

Liang

2009

Ieee Infocom 2009

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“…So far, intersystem handover studies for UMTS have only focused on the handover between UMTS and the Global System for Mobile Communications (GSM) [5], [6] and between UMTS and wireless local area networks (WLANs) [7], [8]. No literature is available concerning the handover between UMTS and DVB-H in a converged UMTS/DVB-H network at the time of the writing of this paper.…”

Section: Igital Video Broadcasting For Handhelds (Dvb-h) [1]mentioning

confidence: 99%

Intersystem Soft Handover for Converged DVB-H and UMTS Networks

Yang

Owens

2008

IEEE Trans. Veh. Technol.

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Abstract-Digital video broadcasting for handhelds (DVB-H)is the standard for broadcasting Internet Protocol (IP) data services to mobile portable devices. To provide interactive services for DVB-H, the Universal Mobile Telecommunications System (UMTS) can be used as a terrestrial interaction channel for the unidirectional DVB-H network. The converged DVB-H and UMTS network can be used to address the congestion problems due to the limited multimedia channel accesses of the UMTS network. In the converged network, intersystem soft handover between DVB-H and UMTS is needed for an optimum radio resource allocation, which reduces network operation cost while providing the required quality of service. This paper deals with the intersystem soft handover between DVB-H and UMTS in such a converged network. The converged network structure is presented. A novel soft handover scheme is proposed and evaluated. After considering the network operation cost, the performance tradeoff between the network quality of service and the network operation cost for the intersystem soft handover in the converged network is modeled using a stochastic tree and analyzed using a numerical simulation. The results show that the proposed algorithm is feasible and has the potential to be used for implementation in the real environment.Index Terms-Compressed mode, digital video broadcasting for handhelds (DVB-H), handover, stochastic trees, Universal Mobile Telecommunications System (UMTS).

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“…It can also be compared as inter-technology roaming. However, for handover between UMTS and Wireless Local Area Network (WLAN) the data link layer technology is to be changed [4].…”

Section: Background and Motivationmentioning

confidence: 99%

Seamless Mobility Management between IP-based Networks

Khan¹,

Arafat²,

Dimyati³

et al. 2012

IJNC

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This article represents an approach of providing seamless services to the mobile consumer in an area having convergence of different Radio Access Technologies (RATs). In particular, the proposed framework is capable of managing session mobility between General Packet Radio Service (GPRS) and Worldwide Interoperability for Microwave Access (WiMAX) at the core network level. Within this interworking architecture, IP Multimedia Subsystem (IMS) was applied as a common platform at the application layer for session mobility and Mobile IP was applied at the network layer to maintain IP mobility. The unique contribution of this architecture is the hypothetical user mobile device having multiple transceivers along with intelligence of making decisions of handover. The article comes to an end by narrating the potential advantages of the proposed approach in eliminating the packet loss due to handover.

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Mobility management in integrated UMTS/WLAN networks

Cited by 104 publications

References 3 publications

Structured Admission Control Policy in Heterogeneous Wireless Networks with Mesh Underlay

Structured Admission Control Policy in Heterogeneous Wireless Networks with Mesh Underlay

Intersystem Soft Handover for Converged DVB-H and UMTS Networks

Seamless Mobility Management between IP-based Networks

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