Optimal soft frequency reuse and dynamic sub‐carrier assignments in cellular OFDMA networks

Bohge, Mathias; Gross, James; Wolisz, Adam

doi:10.1002/ett.1434

Cited by 8 publications

(7 citation statements)

References 9 publications

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“…In general, we observe that the MMTF scheduler leads to higher minimum user throughput than IS-PTF. This is not surprising since MMTF is guaranteed to maximize minimum temporal share according to (10). Also, when increases, the minimum user throughput and temporal share decrease for both schedulers because increasing leads to less chance for the users to be scheduled.…”

Section: Performance Of the Proposed Scheduler In Nonhomogeneously Pomentioning

confidence: 92%

“…Let { * } =1 and * denote the solution of MMTF problem (10). Because the patterns are mutually exclusive, each section of the network is covered by one pattern.…”

Section: Theorem 4 If the Patterns Are Mutually Exclusive The Solutmentioning

confidence: 99%

“…In this section, we study the impact of the choice of the underlying pattern set in the context of MMTF problem (10). The performance metric is taken as the minimum of the temporal shares of all the users served in the CN ( in (10)).…”

Section: Impact Of Gps Selection For the Mmtf Formulationmentioning

confidence: 99%

“…UPS outperforms all the other pattern sets for all values of . This is because UPS includes every possible pattern which leads to the largest possible feasible set for problem (10). We remark that that the performance of UPS is an upper-bound for any GPS since every GPS is a subset of UPS according to Section 2.2.…”

Section: Impact Of Gps Selection For the Mmtf Formulationmentioning

confidence: 99%

“…SFR is shown to be superior to FFR in achieving higher spectral efficiency [8,9]. Moreover, using power optimization can improve the performance of SFR as shown in [10]. For other variations of static frequency reusebased ICIC schemes, we refer to the recent survey papers on ICIC specific to OFDM-based LTE networks [1,2,6].…”

Section: Introductionmentioning

confidence: 99%

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Joint Cell Muting and User Scheduling in Multicell Networks with Temporal Fairness

Shahsavari

Akar

Khalaj

2018

Wireless Communications and Mobile Computing

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A semicentralized joint cell muting and user scheduling scheme for interference coordination in a multicell network is proposed under two different temporal fairness criteria. In the proposed scheme, at a decision instant, each base station (BS) in the multicell network employs a cell-level scheduler to nominate one user for each of its inner and outer sections and their available transmission rates to a network-level scheduler which then computes the potential overall transmission rate for each muting pattern. Subsequently, the network-level scheduler selects one pattern to unmute, out of all the available patterns. This decision is shared with all cell-level schedulers which then forward data to one of the two nominated users provided the pattern they reside in was chosen for transmission. Both user and pattern selection decisions are made on a temporal fair basis. Although some pattern sets are easily obtainable from static frequency reuse systems, we propose a general pattern set construction algorithm in this paper. As for the first fairness criterion, all cells are assigned to receive the same temporal share with the ratio between the temporal share of a cell center section and that of the cell edge section being set to a fixed desired value for all cells. The second fairness criterion is based on max-min temporal fairness for which the temporal share of the network-wide worst case user is maximized. Extensive numerical results are provided to validate the effectiveness of the proposed schemes and to study the impact of choice of the pattern set.

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Section: Performance Of the Proposed Scheduler In Nonhomogeneously Pomentioning

confidence: 92%

“…Let { * } =1 and * denote the solution of MMTF problem (10). Because the patterns are mutually exclusive, each section of the network is covered by one pattern.…”

Section: Theorem 4 If the Patterns Are Mutually Exclusive The Solutmentioning

confidence: 99%

Section: Impact Of Gps Selection For the Mmtf Formulationmentioning

confidence: 99%

Section: Impact Of Gps Selection For the Mmtf Formulationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Joint Cell Muting and User Scheduling in Multicell Networks with Temporal Fairness

Shahsavari

Akar

Khalaj

2018

Wireless Communications and Mobile Computing

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Heterogenous QoS‐guaranteed load balancing in 3GPP LTE multicell fractional frequency reuse network

Wang

Pan

et al. 2013

Trans. Emerging Tel. Tech.

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The performance of 3GPP long term evolution (LTE) network can be significantly influenced by unbalanced user distribution. In heavily loaded cells, users cannot obtain satisfied services because of shortage of resources, whereas in lightly loaded cells, there are plenty of unoccupied resources. Load balancing (LB) is proposed to deal with this problem, through which the load distribution among nearby cells can be greatly balanced. However, because of the usage of full frequency reuse in LTE, the cell‐edge throughput is severely deteriorated by strong intercell interference. Meanwhile, LTE network usually serves users with heterogenous quality‐of‐service (QoS) requirements, which requires LB to be aware of it. Furthermore, call admission control (CAC) is indispensable in the process of LB, and it depends heavily on the long‐term average performance of the scheduling scheme. Thus, design of an efficient LB algorithm with the consideration of intercell interference, QoS, CAC and scheduling together becomes an important issue. To deal with the previous problem, a multi‐objective optimisation problem is formulated in this paper. Its complexity is analysed, and a practical algorithm, which includes hybrid scheduling, QoS‐guaranteed CAC, QoS‐aware intracell and intercell LB, is proposed. Extensive simulations are conducted. Results show that the proposed algorithm can approximate the optimal solution efficiently, thus leading to significantly better performance, that is, a lower new call blocking rate for users with QoS requirement, a larger total utility and a higher cell‐edge throughput for users without QoS requirement, although the cost is a bit degradation of the total throughput. Copyright © 2013 John Wiley & Sons, Ltd.

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Uplink analysis for FFR and SFR in composite fading

Mahmud

Hamdi

2012

2012 IEEE 23rd International Symposium on Personal, Indoor and Mobile Radio Communications - (PIMRC)

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Optimal soft frequency reuse and dynamic sub‐carrier assignments in cellular OFDMA networks

Cited by 8 publications

References 9 publications

Joint Cell Muting and User Scheduling in Multicell Networks with Temporal Fairness

Joint Cell Muting and User Scheduling in Multicell Networks with Temporal Fairness

Heterogenous QoS‐guaranteed load balancing in 3GPP LTE multicell fractional frequency reuse network

Uplink analysis for FFR and SFR in composite fading

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