A novel spectrum arrangement scheme for femto cell deployment in LTE macro cells

Wu, Yi; Zhang, Dongmei; Jiang, Hai; Wu, Ye

doi:10.1109/pimrc.2009.5450296

Cited by 48 publications

(22 citation statements)

References 4 publications

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“…However, it does not consider LTE HetNets. Both [18,19] discuss how to efficiently add femto-cell eNBs in existing LTE macro-cells in order to improve the service coverage and network capacity. As mentioned earlier, femto-cell eNB are usually user-installed for private usage.…”

Section: Related Workmentioning

confidence: 99%

Efficient eNB deployment strategy for heterogeneous cells in 4G LTE systems

Wang

Chuang

2015

Computer Networks

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a b s t r a c tBase station deployment is an important issue in cellular communication systems because it determines the cost to construct and maintain a system and also the service quality to users. Conventional 2G and 3G systems assume that base stations are identical in the sense that they have the similar coverage range. For 4G systems, LTE introduces the concept of heterogeneous base stations (also called eNBs), which supports different sizes of coverage range. Given the user distribution and demands in a service area, the problem of deploying heterogeneous eNBs is NP-hard. Therefore, we propose a four-stage eNB deployment strategy to efficiently solve the problem. Our strategy first employs a geometric approach to provide the basic coverage to the service area. Then, it adaptively adjusts the cell range to satisfy the user demands under the power and bandwidth constraints on each eNB. Simulation results verify that the proposed strategy not only significantly saves the system cost, but also reduces the power consumption while balances the traffic loads of eNBs.

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Section: Related Workmentioning

confidence: 99%

Efficient eNB deployment strategy for heterogeneous cells in 4G LTE systems

Wang

Chuang

2015

Computer Networks

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“…According to the technique proposed in [5], the frequency spectrum is divided into two parts, a macrocell dedicated part and a macrocell-femtocell shared spectrum http://jwcn.eurasipjournals.com/content/2014/1/143 part. Macrocell users that pose a threat to nearby femtocells are assigned resources from the dedicated spectrum part.…”

Section: Introductionmentioning

confidence: 99%

“…Similar to [5,21] co-tier interference is considered as noise and the focus is on cross-tier interference. In particular, we consider and propose full system cognition and multi-cell cooperation, where all BSs are cognitive nodes.…”

Section: Introductionmentioning

confidence: 99%

Cross-tier interference management schemes in cognitive heterogeneous networks

Tzelatis

Berberidis

2014

J Wireless Com Network

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To satisfy the ever-increasing data rate and service coverage demands, wireless communication networks evolve into heterogeneous networks (HetNets), where low-cost small base stations are embedded in conventional macrocells. Intercell interference emerges as the key capacity-limiting factor in such dense networks, restricting the reusability of spectral resources. Therefore, advanced interference mitigation techniques relying on multi-cell cooperation have attracted significant attention from the wireless industry and academia. This paper discusses interference management schemes for multi-tiered spectrum access in next-generation HetNets. A novel scheme based on full system cognition and base station cooperation is proposed as an enabler for high-capacity HetNets. In addition, practical implementation and operational challenges are investigated.

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“…(c) Interference avoidance: managing radio resources in such a manner to avoid the impact of interference, e.g. frequency reuse/ spectrum splitting [1], power control [4], and spectrum arrangement [5]. However, these schemes are based on centralistic controlled process, less efficient in spectrum utilization, femto-BSs (FBSs) load will increase when the number of macro-UEs (MUEs) is high and spectrum occupation fluctuates, and also the macro-BS (MBS) needs information of its underlying FBSs.…”

Section: Introductionmentioning

confidence: 99%

Spectrum splitting-based cognitive interference management in two-tier LTE networks

Siswanto

Zhang

Navaie

2014

2014 11th International Symposium on Wireless Communications Systems (ISWCS)

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Abstract-In this paper, we propose a spectrum splitting-based cognitive interference management method for LTE downlink two-tier networks (that provide closed-access mode). In the proposed method, the resource-blocks in the macrocell (in frequency and time domain) are allocated to the users with the received signal-to-interference-plus-noise-ratio greater than a threshold. The rest of resource-blocks are then allocated to the femtocells. To evaluate the effectiveness of this method, we develop a system level simulation and compare the proposed method with no interference management and also interfering resource blockingbased cognitive interference management method (IRB-CIM). It is shown that the proposed method significantly increases average throughput of femtocells' cell-edges. Furthermore, the simulation results indicate that by adjusting parameters, the proposed method results in higher average throughput for femtocells and for overall system compared to other methods. The proposed method senses control-channel of the macrocell to detect spectrum availability which is simpler and faster than IRB-CIM.

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A novel spectrum arrangement scheme for femto cell deployment in LTE macro cells

Cited by 48 publications

References 4 publications

Efficient eNB deployment strategy for heterogeneous cells in 4G LTE systems

Efficient eNB deployment strategy for heterogeneous cells in 4G LTE systems

Cross-tier interference management schemes in cognitive heterogeneous networks

Spectrum splitting-based cognitive interference management in two-tier LTE networks

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