Energy Efficient D2D Communications in Dynamic TDD Systems

Penda, Demia Della; Fu, Liqun; Johansson, Mikael

doi:10.1109/tcomm.2016.2616138

Cited by 39 publications

(10 citation statements)

References 35 publications

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“…One approach to find the exact solution is to use MINLP solvers such as BONMIN [39]. Other exact methods include solving a smooth continuous relaxation of the problem using methods such as branch-and-bound [40], the standard interior-point [41] or the generalized bender decomposition algorithms [42]. The use of heuristic approaches to find suboptimal solutions with low computational complexity for such problems is a very common approach in the literature as clearly used in [29], [43], [44], and many other works.…”

Section: Proposed Qoe-aware Heuristic Algorithm For D2d Video Stmentioning

confidence: 99%

A QoE-Aware Mode Selection Framework for Video Streaming in D2D Networks

2020

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Device-to-Device (D2D) communication is a novel approach that has been proposed to enhance the performance of traditional cellular networks. This work focuses on video streaming using D2D communications underlaying a Long Term Evolution (LTE) network where resources are allocated to each D2D pair in three modes of operation; cellular, dedicated and reuse. The objective is to maximize the sumrate of the D2D pairs while maintaining continuous video playback with an acceptable quality level. Unlike previous works, which assign one channel to each user or divide the available resources equally between them or assume constant bit rate streaming (CBR), we estimate the number of Resource Blocks (RBs) needed for all users according to their rate and Signal-to-Noise Ratio (SNR) requirements and consider Scalable Video Coding (SVC). A complete Quality of Experience (QoE)-aware framework for D2D-based video streaming that includes resource allocation, power control, mode selection and SVC layer selection is then proposed while taking into consideration buffer occupancies and the video peak signal-to-noise ratio (PSNR). The efficacy of the proposed scheme is evaluated through extensive simulations and compared to the scenario where only one mode of operation is assigned to all D2D pairs. Furthermore, the effect of the number of D2D users as well as their mobility is also investigated. Simulation results show that the proposed framework improves the throughput of the D2D pairs when compared to a single mode of operation while at the same time providing better video quality and continuity.

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Section: Proposed Qoe-aware Heuristic Algorithm For D2d Video Stmentioning

confidence: 99%

A QoE-Aware Mode Selection Framework for Video Streaming in D2D Networks

2020

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“…Commonly used clustering methods include threshold method [16][17][18] and heuristic algorithm [19]. Without losing generality, we use a threshold method that based on link coupling loss [17].…”

Section: System Modelmentioning

confidence: 99%

“…Step 5: Calculate the left shifting priority according to the formulas (14)~ (18) and perform left shifting operation following the principle of left shifting.…”

Section: Shifting Flowmentioning

confidence: 99%

Service- and interference-aware dynamic TDD design in 5G ultra-dense network scenario

Gao¹,

Binyong²,

Chuai³

2017

J Wireless Com Network

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The 5G wireless communication system supports varied applications, making the uplink/downlink traffic asymmetry more and more serious. Dynamic time division duplex (TDD) technique has become a key technology of 5G networks due to its flexibility to support asymmetric services. In this paper, we study dynamic TDD sub-frame reconfiguration algorithm based on shifting. Firstly, we define cell shifting priority considering both traffic and interference. Then, we perform cell shifting-based TDD sub-frame reconfiguration following cell shifting priority. Simulation results show that the proposed dynamic TDD algorithm can guarantee high data rate and low interference, thus effectively increases the network throughput.

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“…Thus, TNHD takes into account D2D communication [7]- [15], which may enhance the energy consumption for both, the BS and the boundary cell UE, and this is one of the main requirements of the 5G cellular networks [16], [17].…”

Section: Introductionmentioning

confidence: 99%

FD MAC Protocol Design for Co-Existing WLANs in 5G Cellular Networks

Diakité

Rizo

Bandiri

2021

J. Microw. Optoelectron. Electromagn. Appl.

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In this paper, we design full-duplex (FD) medium access control (MAC) protocol for co-existing wireless local area networks (WLANs) in 5G cellular networks (WCFD-MAC). Our design considers some significant features of 5G networks, exceptionally, beamforming and FD capabilities at both, the base station and user equipment. FD communications may generate interferences, namely self-interference (SI) in bidirectional FD (BFD) and interuser interferences in three-node FD (TNFD). Several efforts have been performed to mitigate the SI in BFD communications. However, the inter-user interferences in TNFD are still considered as a major drawback in FD networks. These interferences must be mitigated by an efficient MAC protocol design. WCFD-MAC protocol allows two neighboring users to simultaneously participate in TNFD communication without interfering with each other by using directional transmission and a three-node angle condition (TAC). Directional transmission combined with TAC increases system throughput. WCFD-MAC protocol allows a new half-duplex (HD) communication scheme referred to as three-node HD (TNHD). This scheme may occur when bidirectional FD (BFD) and TNFD communications cannot occur. TNHD scheme includes device-todevice (D2D) communication and allows energy efficiency, which is one of the keys requirements of 5G wireless networks. Simulations results show that WCFD-MAC protocol achieves higher throughput than existing works in the literature.

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Energy Efficient D2D Communications in Dynamic TDD Systems

Cited by 39 publications

References 35 publications

A QoE-Aware Mode Selection Framework for Video Streaming in D2D Networks

A QoE-Aware Mode Selection Framework for Video Streaming in D2D Networks

Service- and interference-aware dynamic TDD design in 5G ultra-dense network scenario

FD MAC Protocol Design for Co-Existing WLANs in 5G Cellular Networks

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