Network-load dependent Partial Frequency Reuse for LTE

Krasniqi, Bujar; Wrulich, Martin; Mecklenbräuker, Christoph F.

doi:10.1109/iscit.2009.5341160

Cited by 30 publications

(15 citation statements)

References 9 publications

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“…This way all directly neighboring cells in the system use different sub-bands to avoid heavy interference among them and the entire available system bandwidth can be reused in all cell-clusters distributed over the network covered area so that the utilization of valuable spectrum resources can be ensured to some extent. B. Krasniqi, M. Wrulich and C. F. Mecklen braukerin [4] investigated a flexible and dynamic bandwidth allocation scheme using partial frequency reuse depending on network load. Generally in cellular networks, the users at the cell edge suffer from more Inter-cell Interference than users closer to their serving base station.…”

Section: Literature Reviewmentioning

confidence: 99%

“…Increasing reuse factor will reduce system capacity but will also reduce interference. Partial Frequency Reuse has been introduced in [4] which consist of splitting the bandwidth into two parts: Full Reuse (FR) part and Partial Reuse (PR) part. Fractional Frequency Reuse (FFR) has been proposed in [5] because of its advantages over reuse-1 and reuse-3 while Soft Frequency Reuse (SFR) scheme has been proposed in [6].…”

Section: Introductionmentioning

confidence: 99%

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A Review on Co-Tier Interference Reduction Techniques In Between LTE Femtocells

Belalekar¹

2015

IJIRSET

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Nowadays LTE (Long Term Evaluation) network becomes more popular and main issue regarding LTE network is indoor coverage. In LTE spectrum is limited so to increase spectral efficiency most of the operator deploy single frequency network but this also increase level of interference. Femtocell deployment inside Macrocell network can reduce indoor coverage issue but unplanned placing of Femtocells as per user requirements may create interference between Femtocells which is called as "Co-tier interference" which may have an impact on the overall performance of Femtocells. Avoiding such interference is very important for Femtocells to work properly. Hence this research survey seeks to analyze various techniques used for Co-tier interference reduction in LTE Femtocell networks are discussed in this review paper.

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Section: Literature Reviewmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Review on Co-Tier Interference Reduction Techniques In Between LTE Femtocells

Belalekar¹

2015

IJIRSET

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“…PRF has been studied, e.g. in [51], [52], [53]. This section studies the performance of full-duplex radios in the presence of inter-cell interference.…”

Section: Multi-cellmentioning

confidence: 99%

Full duplex device-to-device communication in cellular networks

Ali

Rajatheva

Latva-aho

2014

2014 European Conference on Networks and Communications (EuCNC)

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To address the problem of radio spectrum congestion due to increasing demand for wireless communications services, cellular communication systems are going towards small cells with small transmit powers. At the same time, in-band full-duplex (FD) radio design has gained considerable attention due to achievements in signal processing that can make design of full-duplex radios possible for systems with small transmit power. In theory full-duplex radios can double the spectral efficiency of the system. However existing radios still do not provide enough self-interference (SI) cancelation to be used in large transmit power systems. Meanwhile device-to-device communication (D2D) is seen as a promising idea to increase the performance of wireless networks. In D2D, users in vicinity communicate directly without going through base station. So far, very limited work has been carried out to study the applicability of available full-duplex radios in D2D. In this thesis, we investigate full-duplex D2D and amount of self-interference cancelation required in D2D in cellular systems. While D2D users share the same radio resources with cellular users, both cellular and D2D pair will receive interference. Resource allocation and interference management become crucial in D2D communication. Both uplink and downlink resource sharing are considered. In uplink resource sharing, to handle the interference on the base station power control is used in D2D transmitter. To deal with the interference at D2D receivers from cellular user's uplink transmission, interference-limited-area (ILA) method is used to select users with negligible interference on them. When D2D pair is using downlink resources of cellular users, users receive interference from D2D transmissions. Limiting this interference is also done using ILA method. On the other hand, for the purpose of resource sharing , the user with smallest downlink transmit power is selected to minimize the interference on D2D receivers. Half-duplex (HD) and full-duplex D2D scenarios are considered in both uplink and downlink resource sharing. Simulations show that how much of self-interference cancelation is required in different scenarios. Effects of the numbers of the selected users for resource sharing, distance between D2D users and also inter-cell interference is studied. It can be concluded that using available full-duplex radios in D2D communication can almost reach the theoretical doubling of throughput in full-duplex mode compared to half-duplex mode.

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“…For the selected adaptive reuse partitioning technique the evaluations have shown that either the interference-based variant with re-use 1 or the variant with re-use 3 at the cell border can be recommended for the cases which need additional gain, e.g. for the VoIP service (Krasniqi et al, 2009;Xiang et al, 2007). This would also hold for other real-time services (e.g.…”

Section: Comparison Of Mitigation Interference Techniquesmentioning

confidence: 99%