Seamless session mobility scheme in heterogeneous wireless networks

Chiu, Kuan-Lin; Chen, Yuh‐Shyan; Hwang, Ren-Hung

doi:10.1002/dac.1189

Cited by 38 publications

(24 citation statements)

References 26 publications

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“…The next generation wireless communication system will likely be heterogeneous networks, as various technologies can be integrated on heterogeneous networks [34]. For future works, we would like to study the HOLB problem in heterogeneous wireless networks.…”

Section: Discussionmentioning

confidence: 99%

Handoff optimization and load balancing in wireless LANs using association control

Sun

Huang

Zhang

et al. 2013

Int J Communication

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SUMMARYAs users move around in wireless local area networks, they associate with different access points in succession to maintain connectivity. Without the carefully designed association control policy, it may lead to frequent handoffs and imbalanced load, which can potentially incur unacceptable delays and poor throughput. While existing works to this issue mainly focus on minimizing the number of handoffs over time, in this paper, we propose a new association control scheme with the goal of reducing the frequency of handoffs and balancing load among access points. The defined problem, handoff optimization and load balancing (HOLB,) is mathematically described as a minimum-maximum programming. Since the HOLB problem is a nondeterministic polynomial-time hard, two constant approximation algorithms are presented to resolve it. First, we propose an˛-approximation(˛> 2) centralized algorithm CHOLB. CHOLB employs a novel method to simplify the original problem to the minimum-cost maximum-flow problem, which is solved in polynomial time. On the sis of CHOLB, we then put forward aˇ-approximation (ˇ> 2) distributed algorithm DHOLB for the purpose of scalability and lightweight. DHOLB partitions the network into clusters and uses CHOLB as its local centralized algorithm within each cluster. Extensive evaluations show that the proposed algorithms outperform the existing schemes in terms of the handoff frequency and traffic load.

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Section: Discussionmentioning

confidence: 99%

Handoff optimization and load balancing in wireless LANs using association control

Sun

Huang

Zhang

et al. 2013

Int J Communication

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“…Thus, the mobility management process should be properly addressed prior to accessing the mobile cloud computing environment [9,10]. Several mobility management approaches have been proposed to handle the handover process in cloud computing [11][12][13]. However, these existing approaches still use the traditional methods to obtain the cloud services from the servers.…”

Section: Introductionmentioning

confidence: 99%

Energy-efficient service-oriented architecture for mobile cloud handover

Hani

Dichter

2017

J Cloud Comp

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Mobile cloud computing uses features to deliver outsourcing data to remotely available mobile devices. However, the flexible nature of the mobile device is a critical challenge for the mobile cloud computing environment. The mobile phone significantly degrades the data transfer performance when initiating the handover process. Thus, an energy-efficient handover process could improve the quality of service (QoS). Here, we introduce a secure energy-efficient and quality-of-service architecture (EEQoSA) for the handover process in the mobile cloud computing environment. The proposed architecture involves four layers: application, the Internet protocol multimedia subsystem (IPMS), communication, and media with connectivity layers. These four layers collectively handle the energy-efficiency, security and QoS parameters. Existing serviceoriented architectures designed for mobile cloud computing are based on the symmetric encryption cryptography to support different media services. However, this approach easily allows an adversary to expose the symmetric key and gain access to private data. Thus, our proposed architecture uses the secure and strong authentication (SSA) process at the IPMS layer by protecting the media services from unauthorized users, as the IPMS is the central layer that could be the entry point for an adversary. Furthermore, to extend the mobile lifetime during the handover process, an energy detection (ED) model is deployed at the communication layer to detect the energy level of the mobile device prior to the handover initialization process. The media with the connectivity layer supports the secure handover process using a priority enforcement module that allows only legitimate users to complete the re-registration process after initiating the handover. Finally, the architecture is tested using the CloudSim simulation environment and validated by a comparison with other known service-oriented architectures.

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“…Heterogeneous wireless network is one of the hot research topics in the wireless domain . This network supports wireless devices with and can seamlessly interoperate in more than one wireless technology.…”

Section: Introductionmentioning

confidence: 99%

Simplified gateway selection scheme for multihop relay in vehicular ad hoc network

Alawi

Saeed

Hassan

et al. 2013

Int J Communication

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SUMMARYIntegrating vehicular ad hoc network (VANET) and universal mobile telecommunication system (UMTS) could be a promising architecture for future machine-to-machine applications. This integration can help vehicles have steady Internet connection through the UMTS network and in communicating with other vehicles. However, dead spot areas and unsuccessful handoff processes caused by the high speed of vehicles can disrupt the implementation of this kind of architecture. In this paper, a new simplified gateway selection (SGS) scheme for multihop relay in a VANET-UMTS integration network is proposed. The proposed scheme extends the coverage or/and calming of the frequent handoff process and allows vehicles to continue to be connected to the UMTS infrastructure network. An integrated simulation environment that combines VanetMobiSim and NS2 is used to simulate and evaluate the proposed scheme. The simulation results show that the SGS scheme performed better when it was implemented with ad hoc on a demand distance vector routing and destination-sequenced distance vector routing protocols. Furthermore, the SGS scheme is compared with other cluster-based gateway selections used in the previous works. The results show that our SGS scheme outperforms other cluster-based gateway selections scheme in terms of selection delay, control packet overhead, packet delivery ratio, and overall throughput.

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Seamless session mobility scheme in heterogeneous wireless networks

Cited by 38 publications

References 26 publications

Handoff optimization and load balancing in wireless LANs using association control

Handoff optimization and load balancing in wireless LANs using association control

Energy-efficient service-oriented architecture for mobile cloud handover

Simplified gateway selection scheme for multihop relay in vehicular ad hoc network

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