Joint Interference Coordination and Load Balancing for OFDMA Multihop Cellular Networks

Zhao, Yue; Fang, Xuming; Huang, Rongsheng; Fang, Yuguang

doi:10.1109/tmc.2012.224

Cited by 43 publications

(17 citation statements)

References 27 publications

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“…In [12], Choi et al modify the optimization problem of proportional fair (PF) [13] scheduling for orthogonal frequency division multiple access (OFDMA) systems [14] to improve cell-edge user throughput while maximizing total system throughput. In [15], a resource allocation algorithm is proposed for MRNs under a PF scheduling policy; the proposed algorithm determines the amount of resources for the BS-to-RS links by assigning resource slots according to the PF scheduling metric. In [16], a scheduling scheme is proposed under a max-min fair constraint; however, PF is not considered.…”

Section: Related Workmentioning

confidence: 99%

“…In [16], a scheduling scheme is proposed under a max-min fair constraint; however, PF is not considered. In [15] and [17], the intercell and the intracell interferences are greatly reduced through an orthogonal frequency band allocation scheme. In [18], an optimal resource allocation is considered in relation to relay networks of greater complexity than dual-hop, and a distributed resource allocation algorithm is proposed.…”

Section: Related Workmentioning

confidence: 99%

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Optimal Resource Planning with Interference Coordination for Relay-Based Cellular Networks

Kim¹,

An²,

Yu³

2017

KSII TIIS

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Multihop relay-based cellular networks are attracting much interest because of their throughput enhancement, coverage extension, and low infrastructure cost. In these networks, relay stations (RSs) between a base station (BS) and mobile stations (MSs) drastically increase the overall spectral efficiency, with improved channel quality for MSs located at the cell edge or in shadow areas, and enhanced throughput of MSs in hot spots. These relay-based networks require an advanced radio resource management scheme because the optimal amount of radio resource for a BS-to-RS link should be allocated according to the MS channel quality and distribution, considering the interference among RSs and neighbor BSs. In this paper, we propose optimal resource planning algorithms that maximize the overall utility of relay-based networks under a proportional fair scheduling policy. In the first phase, we determine an optimal scheduling policy for distributing BS-to-RS link resources to RSs. In the second phase, we determine the optimal amount of the BS-to-RS link resources using the results of the first phase. The proposed algorithms efficiently calculate the optimal amount of resource without exhaustive searches, and their accuracy is verified by comparison with simulation results, in which the algorithms show a perfect match with simulations.

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Section: Related Workmentioning

confidence: 99%

Section: Related Workmentioning

confidence: 99%

Optimal Resource Planning with Interference Coordination for Relay-Based Cellular Networks

Kim¹,

An²,

Yu³

2017

KSII TIIS

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“…In that, RSs generally exploit the exact same spectrum as BSs or MSs. The radio resource allocation schemes and co-channel interference (CCI) will be closely correlated in RBCNs because of the intracell and inter-cell frequency reuse, as presented in Fig.1 [7]. Frequency planning should be employed in OFDMA systems for enhancing the performance of the cell edge and alleviating interference management [15].…”

Section: Problem Overviewmentioning

confidence: 99%

“…In addition, the outcomes also show that the proposed scheme with the local forwarding scheme can obtain a higher throughput than the local forwarding scheme in the traditional relay system. In [7] an empirical analysis of adaptive resource allocation schemes through the cooperation of load balancing (LB) and interference coordination (IC) is proposed. Also, an innovative frequency reuse scheme is designed in order to preserve high spectral efficiency and alleviate interference.…”

Section: B Different Frfmentioning

confidence: 99%

“…In OFDMA RBCN, quite a lot of methods have been proposed to prevent co-channel interference [1], [5] - [14]. In [5]- [6], [8]- [12] the authors try to keep a Frequency Reuse Factor (FRF) of one and proposed different algorithms to cope with interference coordination, while the authors [1], [7], [13]- [14] set a different FRF and developed various types of frequency reuse technique. This paper focuses on downlink OFDMA-RBCN, and develops a review of the interference coordination scheme to alleviate interference, and, hence, improve system throughput.…”

Section: Introductionmentioning

confidence: 99%

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Co-channel interference mitigation techniques in multi-cell OFDMA Relay-Based Cellular Networks: A survey

Masoumiyan

Zukarnain

Subramaniam

et al. 2014

Proceedings of the 6th International Conference on Information Technology and Multimedia

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Orthogonal Frequency Division Multiplexing Access (OFDMA) technology along with cooperative relay networks are generally described as an appropriate applicant for developed cellular networks because of the improvements to system performance through flexible resource allocation schemes. In these networks interference-aware resource allocation or interference coordination, represents an important role in raising resource utilization as well as enhancing cell throughput. This paper focuses on existing co-channel interference mitigation methods in multi-cell OFDMA Relay Based Cellular Networks (RBCNs).It aims to utilize the advantages of relay stations while reducing the negative effects of introduced interference. This research first presents the general system model scenarios of interference in RBCNs and provides an overview of the problem. It then compares the potential interference scenarios in these systems. Our study examines the techniques based on the frequency reuse factor they use and shows that even by maintaining the frequency reuse at one; we can maximize the system throughput.

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An optimized cooperative data transmission scheme in relay‐enabled cellular communication networks

Wang,

Ren,

Zhang

2024

Int J Communication

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SummaryCooperative transmission is of great significance in data transmission and resource schedule in mobile cellular communication networks. To attain the desired network transmission performance objectives over the whole cellular network system, we propose an appropriate cooperative data transmission scheme to optimize the data delivery efficiency in terms of the transmission time consumption for each and every transmission group. The proposed transmission optimization scheme includes the tasks of determining the transmission group, allocating the channel rate resource, specifying the cooperative transmission mechanism, and performing resource allocation and schedule as well. Firstly, we propose a utility function based rate allocation scheme to optimize the channel rate resource utilization for all those transmission groups over the cellular communication network. Based on it, we further present a cooperative data transmission scheme to deal with the data delivery and reception for all those subgroups with high efficiency over the whole network system. Particularly, we propose a resource efficiency function‐based coordination scheduling (EFCS) scheme to conduct the cooperative data transmission and resource schedule as well for each transmission group within the network. The EFCS scheme facilitates to determine the subgroups for schedule over each scheduling cycle, which can produce the best data transmission efficiency across both the direct and cooperative transmission hop. Both the theoretical analysis and the simulation evaluation results verify the superior performance of our proposed cooperative data transmission scheme.

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Joint Interference Coordination and Load Balancing for OFDMA Multihop Cellular Networks

Cited by 43 publications

References 27 publications

Optimal Resource Planning with Interference Coordination for Relay-Based Cellular Networks

Optimal Resource Planning with Interference Coordination for Relay-Based Cellular Networks

Co-channel interference mitigation techniques in multi-cell OFDMA Relay-Based Cellular Networks: A survey

An optimized cooperative data transmission scheme in relay‐enabled cellular communication networks

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