Decentralized time domain muting for interference mitigation in LTE-advanced heterogeneous networks

Gadam, M.A.; Maryam, A A; Nordin, Nor Kamariah; Sali, Aduwati; Hisyam, Fazirul

doi:10.1109/csudet.2015.7446219

Cited by 2 publications

(3 citation statements)

References 8 publications

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“…As such, enhanced intercell interference coordination (eICIC) is employed to mitigate the effect of interference by the MeNB. The eICIC [3,25] concept is a custom-planned technique used to alleviate the potential downlink interference that may arise in multilayer networks because of cochannel deployment of MeNBs and PeNBs. In contrast to LTE Rel.…”

Section: Journal Of Computer Network and Communicationsmentioning

confidence: 99%

Review of Adaptive Cell Selection Techniques in LTE-Advanced Heterogeneous Networks

Gadam

Ahmed

et al. 2016

Journal of Computer Networks and Communications

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Poor cell selection is the main challenge in Picocell (PeNB) deployment in Long Term Evolution- (LTE-) Advanced heterogeneous networks (HetNets) because it results in load imbalance and intercell interference. A selection technique based on cell range extension (CRE) has been proposed for LTE-Advanced HetNets to extend the coverage of PeNBs for load balancing. However, poor CRE bias setting in cell selection inhibits the attainment of desired cell splitting gains. By contrast, a cell selection technique based on adaptive bias is a more effective solution to traffic load balancing in terms of increasing data rate compared with static bias-based approaches. This paper reviews the use of adaptive cell selection in LTE-Advanced HetNets by highlighting the importance of cell load estimation. The general performances of different techniques for adaptive CRE-based cell selection are compared. Results reveal that the adaptive CRE bias of the resource block utilization ratio (RBUR) technique exhibits the highest cell-edge throughput. Moreover, more accurate cell load estimation is obtained in the extended RBUR adaptive CRE bias technique through constant bit rate (CBR) traffic, which further improved load balancing as against the estimation based on the number of user equipment (UE). Finally, this paper presents suggestions for future research directions.

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Section: Journal Of Computer Network and Communicationsmentioning

confidence: 99%

Review of Adaptive Cell Selection Techniques in LTE-Advanced Heterogeneous Networks

Gadam

Ahmed

et al. 2016

Journal of Computer Networks and Communications

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“…Because our algorithm is susceptible to interference, we employ load‐aware almost blank subframes (ABS) muting from our previous work in to mitigate the severe effect of interference on the PeNB LPUs. The capacity of all UEs (HPUs and LPUs) connected to any MeNB as a function of the ABS muting ratio γ is given by

C_{M U E} ((), γ) = true {true\sum}_{k = 1}^{k} ((), ((), N_{R B} true/ N_{M U E}) . ((), S E_{k}) ((), 1 - γ))

with N RB and N MUE as the total number of resource blocks and the number of UEs connected to MeNB, respectively.…”

Section: System Modelmentioning

confidence: 99%

“…Because our algorithm is susceptible to interference, we employ load-aware almost blank subframes (ABS) muting from our previous work in [24] to mitigate the severe effect of interference on the PeNB LPUs. The capacity of all UEs (HPUs and LPUs) connected to any MeNB as a function of the ABS muting ratio γ is given by…”

Section: Load-aware Distributed Time Domain Muting For Inter-cell Intmentioning

confidence: 99%

Hybrid channel gain prioritized access‐aware cell association with interference mitigation in LTE‐Advanced HetNets

Gadam

Nordin

et al. 2016

Int J Communication

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Summary LTE‐Advanced heterogeneous networks deployment is meant to address the increasing demand for quality of service, high data rates and coverage extension. Load balancing is among the primary challenges, especially when the user equipments (UEs) associate with diverse transmission power network tiers using received signal strength. The low‐power network tier's spectrum will be underutilized, and UEs associated with them will be inflicted by interference from the high‐power network tier. The proposed hybrid channel gain prioritized access (HCGPA)‐aware cell association scheme stresses the importance of combined metrics with interference mitigation to simultaneously achieve load balancing and enhance performance among the network tiers. The high‐priority UEs associate with the tier that gives the maximum channel gain being higher than a given threshold. While the low‐priority UEs association is based on the maximum joint metrics (channel gain, channel access probabilities of low‐priority UEs and high‐priority UEs). The HCGPA scheme has 1.72 times the number of UEs connected to low‐power networks, 8% better load balancing fairness, compared with the conventional reference signal receive power and RSRP + 6 dB bias cell associations. Although the susceptibility of HCGPA to interference led to the poor signal to interference to noise ratio (SINR) performance of the cell‐edge UEs, the cell‐centre UEs exhibited the best spectral efficiency performance. Copyright © 2016 John Wiley & Sons, Ltd.

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Decentralized time domain muting for interference mitigation in LTE-advanced heterogeneous networks

Cited by 2 publications

References 8 publications

Review of Adaptive Cell Selection Techniques in LTE-Advanced Heterogeneous Networks

Review of Adaptive Cell Selection Techniques in LTE-Advanced Heterogeneous Networks

Hybrid channel gain prioritized access‐aware cell association with interference mitigation in LTE‐Advanced HetNets

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