Journal ArticleDOI
Resource allocation for device-to-device communications underlaying LTE-advanced networks
TLDR
A novel resource allocation scheme based on a column generation method for D2D communications in LTE-Advanced networks is introduced to maximize the spectrum utilization by finding the minimum transmission length in terms of time slots while protecting the cellular users from harmful interference and guaranteeing the QoS of D1D links.Abstract:
The Long Term Evolution-Advanced (LTEAdvanced) networks are being developed to provide mobile broadband services for the fourth generation (4G) cellular wireless systems. Deviceto- device (D2D) communications is a promising technique to provide wireless peer-to-peer services and enhance spectrum utilization in the LTE-Advanced networks. In D2D communications, the user equipments (UEs) are allowed to directly communicate between each other by reusing the cellular resources rather than using uplink and downlink resources in the cellular mode when communicating via the base station. However, enabling D2D communications in a cellular network poses two major challenges. First, the interference caused to the cellular users by D2D devices could critically affect the performances of the cellular devices. Second, the minimum quality-of-service (QoS) requirements of D2D communications need to be guaranteed. In this article, we introduce a novel resource allocation scheme (i.e. joint resource block scheduling and power control) for D2D communications in LTE-Advanced networks to maximize the spectrum utilization while addressing the above challenges. First, an overview of LTE-Advanced networks, and architecture and signaling support for provisioning of D2D communications in these networks are described. Furthermore, research issues and the current state-of-the-art of D2D communications are discussed. Then, a resource allocation scheme based on a column generation method is proposed for D2D communications. The objective is to maximize the spectrum utilization by finding the minimum transmission length in terms of time slots for D2D links while protecting the cellular users from harmful interference and guaranteeing the QoS of D2D links. The performance of this scheme is evaluated through simulations.read more
Citations
More filters
Proceedings ArticleDOI
Reference signal design for LTE-based D2D communications
Cui Fengming,Gong Ping,Niu Kai +2 more
TL;DR: Simulation results prove the effectiveness of the proposed D2D RS scheme by adopting LTE uplink SC-FDMA as the air interface, the DMRS (demodulation reference signal) as the original RS and the proposed RS design as the new RS pattern.
Proceedings ArticleDOI
Cross-tier Interference Reduction in MIMO Heterogeneous Network with Imperfect CSI
Engy Aly Maher,Ahmed El-Mahdy +1 more
TL;DR: The problem of cross-tier interference reduction in MIMO in heterogeneous macro-small cell network enabling D2D communications is investigated in presence of imperfect Channel State Information (CSI).
Journal Article
Security in Hybrid Cryptographic Algorithm and Power Control Mechanisms for Device-to-Device Communications
TL;DR: The proposed research work is to implement step by step incorporation of Interference reduction with Bit Error Rate analysis, Security Implementation by incorporating Hybrid cryptographic system, implementing the power control and management mechanism for efficient PRB allocation and finally Huffman coding and binary coding in association with cryptographic algorithms with improved key transmission in D2D communications to attain the optimum performance.
Proceedings ArticleDOI
Social-Assisted Hypergraph Based Subchannel Assignment for UAV Cellular Networks
TL;DR: In this article , a socio-hypergraph coloring-based subchannel assignment technique is proposed to maximize the throughput of a UAV-assisted small cell network by considering the cumulative interference experienced by the user equipments (UEs) while assigning subchannels.
Dissertation
Relay Assisted Device to Device Communication Underlaying Cellular Networks
TL;DR: A mode selection algorithm that decides the mode in which the devices can communicate either through traditional cellular mode or D2D mode is proposed, which maximizes the overall throughput.
References
More filters
Journal ArticleDOI
Device-to-device communication as an underlay to LTE-advanced networks
TL;DR: Device-to-device (D2D) communication underlaying a 3GPP LTE-Advanced cellular network is studied as an enabler of local services with limited interference impact on the primary cellular network.
Journal ArticleDOI
Branch-and-Bound Methods: A Survey
Eugene L. Lawler,D. E. Wood +1 more
TL;DR: The essential features of the branch-and-bound approach to constrained optimization are described, and several specific applications are reviewed, including integer linear programming Land-Doig and Balas methods, nonlinear programming minimization of nonconvex objective functions, and the quadratic assignment problem Gilmore and Lawler methods.
Journal ArticleDOI
Resource Sharing Optimization for Device-to-Device Communication Underlaying Cellular Networks
TL;DR: The results show that by proper resource management, D2D communication can effectively improve the total throughput without generating harmful interference to cellular networks.