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
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Proceedings ArticleDOI
Energy-Efficient Resource Allocation for Device-to-Device Communications Overlaying LTE Networks
TL;DR: The energy-efficient resource allocation problem for the device-to- device (D2D) communications overlaying LTE networks, where the D2D user equipment (UE) shares the spectrum with the cellular UE in an orthogonal way such that the interference between them is completely eliminated is investigated.
Journal ArticleDOI
Modeling and Analysis on Access Control for Device-to-Device Communications in Cellular Network: A Network-Calculus-Based Approach
TL;DR: A multipriority model is proposed, which assigns the strictly highest priority to cellular users and multiple levels of priority to D2D users to characterize the communication requests' access and enhances the quality of service (QoS) of the cellular system.
Journal ArticleDOI
QoS-Aware Hybrid Scheduling for Geographical Zone-Based Resource Allocation in Cellular Vehicle-to-Vehicle Communications
TL;DR: This work proposes a zone-based hybrid scheduling mechanism through appropriate evolved Node B (eNB) scheduling followed by distributed scheduling to largely reduce the eNBs’ loading on signaling and computation but maintain the quality of services of C-V2V communications.
Journal ArticleDOI
Algorithm for energy consumption minimisation in wireless sensor network
TL;DR: Simulation results show the performance of the proposed distance-based dynamic duty-cycle allocation (DBDDCA) algorithm is significantly better than the existing strategies under the investigated network parameters.
Proceedings ArticleDOI
Resource allocation for energy-efficient device-to-device communication in 4G networks
TL;DR: Simulations show that the proposed scheme allocates cellular uplink resources (transmit power and channel) to D2D pairs while maintaining the required QoS for D1D and cellular users and minimizing the total uplink transmit power for all users.
References
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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.