On the Potential of Full Duplex Communication in 5G Small Cell Networks

Mahmood, Nurul Huda; Berardinelli, Gilberto; Tavares, Fernando M. L.; Mogensen, Preben

doi:10.1109/vtcspring.2015.7145975

Cited by 36 publications

(26 citation statements)

References 9 publications

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“…Another solution being proposed is the full duplex transmission [65], where there is no separation in time or frequency between downlink and uplink, and all subframes may be used in both directions at the same time, and the self interference (SI) has to be canceled by a combination of analog and digital processing. However, SI supression and cancellation are complex tasks, based in costly hardware design and digital signal processing [66].…”

Section: B New Frame Structuresmentioning

confidence: 99%

5G – Wireless Communications for 2020

Barreto

Faria²,

Almeida³

et al. 2016

JCIS

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Abstract-Existing cellular technologies are rapidly coming to their performance limits. This is due not only to the growth in data traffic and in the number of connected terminals, but also because we are on the verge of new era, where everyone and everything will be connected, with more demanding and varied requirements that cannot be satisfied by current networks. On account of this, efforts are being made all over the world to design new wireless technologies that will support the expected demands for the next decade. These technologies, embraced under the commercial name of 5 th generation, are currently being studied, and in this tutorial paper we will give an overview of the main trends that are likely to make their way in the next-generation standards.

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Section: B New Frame Structuresmentioning

confidence: 99%

5G – Wireless Communications for 2020

Barreto

Faria²,

Almeida³

et al. 2016

JCIS

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show abstract

“…In [10], the performance of IBFD in a dense small cell network was evaluated and compared against the conventional half duplex transmission. It is argued in [10] that IBFD provides 30-40% mean throughput gain over the half duplex for indoor scenarios. The 100% throughput gain is only noticed when the cells are isolated by extremely high wall loss figures.…”

Section: Introductionmentioning

confidence: 99%

“…The authors of [11] arrived to the conclusion that there is a strong need for a MAC protocol for IBFD wireless networks that intelligently switches between IBFD and half duplex based on different network configurations. However, both APs and mobile stations (MSs) are assumed to have IBFD capabilities in [10] and [11]. As we discussed earlier, it is far from being a realistic assumption considering the size limitation of the handheld devices.…”

Section: Introductionmentioning

confidence: 99%

A performance comparison of in-band full duplex and dynamic TDD for 5G indoor wireless networks

Al-Saadeh

Sung

2017

J Wireless Com Network

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In-band full duplex has emerged as a solution for high data rate and low access delay for 5G wireless networks after its feasibility has been demonstrated. However, the impact of the in-band full duplex on the system-level performance of multi-cell wireless networks has not been investigated thoroughly. In this paper, we conduct an extensive simulation study to investigate the performance of in-band full duplex for indoor 5G small cell wireless networks. Particularly, we compare the in-band full duplex with static and dynamic time division duplexing schemes which require much less hardware complexity. We examine the effects of beamforming and interference cancellation under various traffic demands and asymmetry situations in the performance comparison. Our objective is to identify under which condition and with which technology support the in-band full duplex becomes advantageous over the simpler duplexing schemes. Numerical results indicate that for highly utilized wireless networks, in-band full duplex should be combined with interference cancellation and beamforming in order to achieve a performance gain over traditional duplexing schemes. Only then in-band full duplex is considered to be advantageous at any number of active mobile stations in the network and any downlink to uplink traffic proportion. Our results also suggest that in order to achieve a performance gain with the in-band full duplex in both links, the transmit power of the access points and the mobile stations should be comparable.

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“…A number of studies analyzes the FD performance in small cell scenarios [12][13][14][15][16][17][18] and in a macro cell network [19] based on interference levels, disregarding the type of traffic in the network. In [12], the gain that FD provides compared to HD, assuming ideal SIC, is analyzed from a signal-to-interference-plus-noise ratio (SINR) perspective.…”

mentioning

confidence: 99%

“…Both works analyze the SINR region where FD outperforms HD, concluding that in highly interfered scenarios, switching between FD and HD provides the optimal results. In [15], the FD throughput performance using different types of receivers and ideal SIC in a multi-cell scenario is studied. Results show an average throughput gain of 30-40%.…”

mentioning

confidence: 99%

Analyzing the potential of full duplex in 5G ultra-dense small cell networks

Sarret

Berardinelli

Mahmood

et al. 2016

J Wireless Com Network

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Full-duplex technology has become an attractive solution for future 5th generation (5G) systems for accommodating the exponentially growing mobile traffic demand. Full duplex allows a node to transmit and receive simultaneously in the same frequency band, thus, theoretically, doubling the system throughput over conventional half-duplex systems. A key limitation in building a feasible full-duplex node is the self-interference, i.e., the interference generated by the transmitted signal to the desired signal received on the same node. This constraint has been overcome given the recent advances in the self-interference cancellation technology. However, there are other limitations in achieving the theoretical full-duplex gain: residual self-interference, traffic constraints, and inter-cell and intra-cell interference. The contribution of this article is twofold. Firstly, achievable levels of self-interference cancellation are demonstrated using our own developed test bed. Secondly, a detailed evaluation of full-duplex communication in 5G ultra-dense small cell networks via system level simulations is provided. The results are presented in terms of throughput and delay. Two types of full duplex are studied: when both the station and the user equipments are full duplex capable and when only the base station is able to exploit simultaneous transmission and reception. The impact of the traffic profile and the inter-cell and intra-cell interferences is addressed, individually and jointly. Results show that the increased interference that simultaneous transmission and reception causes is one of the main limiting factors in achieving the promised full-duplex throughput gain, while large traffic asymmetries between downlink and uplink further compromise such gain.

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On the Potential of Full Duplex Communication in 5G Small Cell Networks

Cited by 36 publications

References 9 publications

5G – Wireless Communications for 2020

5G – Wireless Communications for 2020

A performance comparison of in-band full duplex and dynamic TDD for 5G indoor wireless networks

Analyzing the potential of full duplex in 5G ultra-dense small cell networks

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