Context-Aware Vertical Handoff Decision Scheme in Heterogeneous Wireless Networks

Peng, Jun; Xian, Huiyuan; Zhang, Xiaoyong; Li, Zheqin

doi:10.1109/trustcom.2011.187

Cited by 4 publications

(3 citation statements)

References 11 publications

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“…In an HetNet environment, each wireless access network has its own characteristics such as capacity, access technology, security, power consumption, delay, coverage, access cost, to name a few [6]. An interesting feature of HetNets is the fact that some wireless access networks are overlaid by others in such a way that a multi-layer structure or a hierarchical cellular mobile network is naturally built.…”

Section: Heterogeneous Wireless Networkmentioning

confidence: 99%

An Optimal Initial Radio Access Technology Selection Method for Heterogeneous Wireless Networks

Rahman¹

2021

Preprint

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In Heterogeneous Wireless Networks, different overlapped Radio Access Technologies (RATs) can coexist with each other in the same geographical area. In such environment, a challenge is to select in which available RATs a user can be connected upon making an incoming service request. In this thesis, this challenge is investigated by proposing a Joint Call Admission Control (JCAC) -based approach that uses the framework of Semi-Markov Decision Process for initial RAT selection in two co-located wireless networks supporting two different service classes. The optimization problem involves the design of a cost function that weights the blocking cost and the energy consumption cost. The JCAC optimal policy is derived using the Value Iteration Algorithm. Simulations results show that the system capacity is maximized while selecting the less energy consuming RAT.

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Section: Heterogeneous Wireless Networkmentioning

confidence: 99%

An Optimal Initial Radio Access Technology Selection Method for Heterogeneous Wireless Networks

Rahman¹

2021

Preprint

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“…The motivation of this approach was to combine several advantages such as low cost and high bandwidth. In HetNet, every network has its own characteristics based on the service demands originated from the users, (which include low-data rate, high-data rate, voice, multimedia, access technology, capacity, security, energy consumption, delay, coverage, and access cost) [9]. One of the most important features is that some of the wireless access networks are overlapped with each others in such a way that a multi-layer structure is naturally built, which matches various design purposes such as:…”

Section: Heterogeneous Wireless Networkmentioning

confidence: 99%

An SMDP-Based initial radio access technology selection method for heterogeneous wireless networks

Islam¹

2021

Preprint

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Heterogeneous Wireless Networks (HetNets) are a class of networks that have been designed to provide an open and flexible architecture for the coexistence of various distinct Radio Access Technologies (RATs). In such networks, one of the key challenges is the selection of the best available RATs when a user is connected upon making an incoming service request. This thesis proposes a Joint Call Admission Control (JCAC) - based approach for initial RAT selection in HetNets composed of two co-located wireless networks . The RAT selection problem in such HetNet is formulated by using a JCAC-based Semi-Markov Decision Process (SMDP) model, where the JCAC policy is determined according to a network cost function that weights three parameters: a cost of blocking the incoming service request, a cost of accessing RAT, and the RAT energy consumption cost. Simulation results are provided, showing the benefits of our approach in terms of RAT selection and resulting network energy consumption cost .

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“…These decision schemes include the well-known and famous decision modelling such as TOSPSIS [12], grey relational analysis (GRA) [13], Vlsekriterijumska optimizacija I KOmpromisno Resenje (VIKOR) [14], and ELimination Et Choix Traduisantla REalite (ELECTRE) [15], and analytical hierarchy process (AHP) [16]. In the case of TOPSIS, an optimal network is selected for handover if it is closer to the ideal situation from other networks.…”

Section: Related Workmentioning

confidence: 99%

A Vertical Handover Management Scheme based on Decision Modelling in Heterogeneous Wireless Networks

Khan

Han

2015

IETE Technical Review

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Providing a continuous connection in heterogeneous wireless networks is a challenging job. Traditional approaches are mainly concerned to specific scenarios. These approaches are also suffering from different problems like ping-pong effect, inappropriate handover triggering, etc. Therefore, to provide a generic connectivity in heterogeneous wireless networks, we proposed a vertical handover decision scheme. The proposed scheme performs handover triggering using simple additive weighting on the data rate of a point of attachment (PoA). The user calculates the data rate required by different applications and then compares it with a predefined threshold. Similarly, the network selection is performed using Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS) decision model on different parameters such as delay, jitter, bit error rate, packet loss ratio, communication cost, response time, and network load. The PoA of a network calculates its rank using TOPSIS and sends it to the user. The user then selects the network with the highest rank. The proposed vertical handover decision scheme is compared with grey relational analysis and analytical hierarchy process in the context of handover rate, failed handovers, packet loss ratio, and throughput. The proposed scheme is tested in different mobility scenarios, and it is shown that our scheme provides superior performance over the existing schemes.

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Context-Aware Vertical Handoff Decision Scheme in Heterogeneous Wireless Networks

Cited by 4 publications

References 11 publications

An Optimal Initial Radio Access Technology Selection Method for Heterogeneous Wireless Networks

An Optimal Initial Radio Access Technology Selection Method for Heterogeneous Wireless Networks

An SMDP-Based initial radio access technology selection method for heterogeneous wireless networks

A Vertical Handover Management Scheme based on Decision Modelling in Heterogeneous Wireless Networks

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