A Study of Quota-Based Dynamic Network Selection for Multimode Terminal Users

Chung, Yao-Liang; Tsai, Zuo‐Min; Yang, Chih-Hui

doi:10.1109/jsyst.2012.2228121

Cited by 4 publications

(4 citation statements)

References 20 publications

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“…Then, the optimal segment allocation vector and the corresponding cost for each alternative RAT set is calculated for the remaining file size (Line 12), and the RAT set of the minimum cost among the alternative RAT sets is found out (Line 14). If the minimum alternative cost is m alt less than the cost F todo , where m alt is a predefined margin, the current RAT set is updated to the alternative RAT set and corresponding segment allocation (Lines [15][16][17]. Otherwise, the current cost F cur and segment allocation vector x cur are substituted by F upd and x upd , respectively (Line 19).…”

Section: B Dynamic Update Algorithmmentioning

confidence: 99%

“…In this approach, a cost or utility function is also formulated in terms of various attributes such as user's signal quality, throughput, delay, energy, service charge, and security. While earlier studies mostly focus on improving user's throughput or delay performance by applying appropriate vertical handoff algorithms [12], [13], the energy consumption and service charge are also recently investigated and considered in [14][15][16].…”

Section: Introductionmentioning

confidence: 99%

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Transfer Time, Energy, and Quota-Aware Multi-RAT Operation Scheme in Smartphone

Lee

Koo

Park

et al. 2016

IEEE Trans. Veh. Technol.

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Today's smartphones integrate multiple radio access technologies (multi-RAT), e.g., 3G, 4G, WiFi, and Bluetooth, while the number of integrated RATs tends to increase. Therefore, it is becoming more important to select the best RAT set among the available RATs, and determine how much data to transfer via each selected RAT network. We propose a multi-RAT interface activation algorithm with supporting system design for smartphones' file transfer service (e.g., downloading a movie file). We model a multi-attribute cost function incorporating file transfer completion time, energy consumption, and data usage quota together. The goal of this work is to find out the optimal multi-RAT set to be activated with the corresponding file segment allocation that minimizes the cost function under given energy and quota constraints. By the proposed algorithm, the suboptimal solution can be found without significant performance degradation from the optimal solution while making the computational complexity linear in the number of RATs.

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Section: B Dynamic Update Algorithmmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Transfer Time, Energy, and Quota-Aware Multi-RAT Operation Scheme in Smartphone

Lee

Koo

Park

et al. 2016

IEEE Trans. Veh. Technol.

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“…Thus far, most of the previous studies have not, to the best of our knowledge, given full consideration to the aforementioned challenges in terms of how they might affect packet scheduler efficiency in 4G/5G systems utilizing multiple-CC transmission. Additionally, given the trend among cellular system operators of co-locating the BSs for mobile networks utilizing various CCs [26], the importance of designing efficient packet schedulers for use in such co-location environments will only increase. With these points in mind, we herein propose a novel packet scheduling algorithm for use in such environments with being focused on downlink transmissions, where the simultaneous transmission of both RT and non-RT traffic is supported; more specifically, this algorithm is based on the classic proportional fair (PF) criterion that has been proposed by Kelly et al [27] and ensures that certain resources are used exclusively for the handling of RT packets.…”

Section: System Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Novel Algorithm for Efficient Downlink Packet Scheduling for Multiple-Component-Carrier Cellular Systems

Chung

2016

Energies

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Abstract:The simultaneous aggregation of multiple component carriers (CCs) for use by a base station constitutes one of the more promising strategies for providing substantially enhanced bandwidths for packet transmissions in 4th and 5th generation cellular systems. To the best of our knowledge, however, few previous studies have undertaken a thorough investigation of various performance aspects of the use of a simple yet effective packet scheduling algorithm in which multiple CCs are aggregated for transmission in such systems. Consequently, the present study presents an efficient packet scheduling algorithm designed on the basis of the proportional fair criterion for use in multiple-CC systems for downlink transmission. The proposed algorithm includes a focus on providing simultaneous transmission support for both real-time (RT) and non-RT traffic. This algorithm can, when applied with sufficiently efficient designs, provide adequate utilization of spectrum resources for the purposes of transmissions, while also improving energy efficiency to some extent. According to simulation results, the performance of the proposed algorithm in terms of system throughput, mean delay, and fairness constitute substantial improvements over those of an algorithm in which the CCs are used independently instead of being aggregated.

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