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Cloud-Radio Access Network (C-RAN) is a promising network architecture to reduce energy consumption and the increasing number of base station deployment costs in mobile networks. However, the necessity of enormous fronthaul bandwidth…

网络与互联网体系结构 · 计算机科学 2021-01-13 Turgay Pamuklu , Cicek Cavdar , Cem Ersoy

Demands for secure, ubiquitous, and always-available connectivity have been identified as the pillar design parameters of the next generation radio access networks (RANs). Motivated by this, the current contribution introduces a network…

Virtualized Radio Access Networks (vRANs) are fully configurable and can be implemented at a low cost over commodity platforms to enable network management flexibility. In this paper, a novel vRAN reconfiguration problem is formulated to…

网络与互联网体系结构 · 计算机科学 2023-07-07 Fahri Wisnu Murti , Samad Ali , George Iosifidis , Matti Latva-aho

The paper deals with a sharing economy system with various management factors by using a bulk input G/M/1 type queuing model. The effective management of operating costs is vital for controlling the sharing economy platform and this…

概率论 · 数学 2019-10-24 Song-Kyoo Kim , Chan Yeob Yeun

In this paper, we study the stochastic optimization of cloud radio access networks (C-RANs) by joint remote radio head (RRH) activation and beamforming in the downlink. Unlike most previous works that only consider a static optimization…

信息论 · 计算机科学 2016-11-15 Jian Li , Jingxian Wu , Mugen Peng , Ping Zhang

The virtualization of radio access networks (RANs) is emerging as a key component of future wireless systems, as it brings agility to the RAN architecture and offers degrees of design freedom. In this paper, we investigate and characterize…

网络与互联网体系结构 · 计算机科学 2022-01-04 Somreeta Pramanik , Adlen Ksentini , Carla Fabiana Chiasserini

Advances in wireless technology have significantly increased the number of wireless connections, leading to higher energy consumption in networks. Among these, base stations (BSs) in radio access networks (RANs) account for over half of the…

信号处理 · 电气工程与系统科学 2024-12-30 Shuo Sun , Chong Huang , Gaojie Chen , Pei Xiao , Rahim Tafazolli

We consider the uplink of a cloud radio access network (C-RAN), where massive MIMO remote radio heads (RRHs) serve as relays between users and a centralized baseband unit (BBU). Although employing massive MIMO at RRHs can improve the…

信息论 · 计算机科学 2019-05-01 An Liu , Xihan Chen , Wei Yu , Vincent Lau , Min-Jian Zhao

One of the key benefits of virtualized radio access networks (vRANs) is network management flexibility. However, this versatility raises previously-unseen network management challenges. In this paper, a learning-based zero-touch vRAN…

网络与互联网体系结构 · 计算机科学 2022-07-20 Fahri Wisnu Murti , Samad Ali , George Iosifidis , Matti Latva-aho

In this paper, we address the problem of power-efficient resource management in Cloud Radio Access Networks (C-RANs). Specifically, we consider the case where Remote Radio Heads (RRHs) perform data transmission, and signal processing is…

网络与互联网体系结构 · 计算机科学 2019-04-25 Salvatore D'Oro , Marcelo Antonio Marotta , Cristiano Bonato Both , Luiz DaSilva , Sergio Palazzo

This dissertation paper presents the main contributions to the design and the implementation of a Cloud-RAN solution. We concretely address the two main challenges of Cloud-RAN systems: real-time processing of radio signals and reduced…

网络与互联网体系结构 · 计算机科学 2019-12-03 Veronica Quintuna Rodriguez , Fabrice Guillemin

We consider the line planning problem in public transportation, under a robustness perspective. We present a mechanism for robust line planning in the case of multiple line pools, when the line operators have a different utility function…

计算机科学与博弈论 · 计算机科学 2015-05-27 Apostolos Bessas , Spyros Kontogiannis , Christos Zaroliagis

In this paper, a transmission protocol is studied for a two relay wireless network in which simple repetition coding is applied at the relays. Information-theoretic achievable rates for this transmission scheme are given, and a space-time…

信息论 · 计算机科学 2016-11-17 Yijia Fan , Chao Wang , John Thompson , H. Vincent Poor

The sectorized hexagonal model with mixed delay constraints is considered when both neighbouring mobile users and base stations can cooperate over rate-limited links. Each message is a combination of independent "fast" and "slow" bits,…

信息论 · 计算机科学 2019-03-01 Homa Nikbakht , Michèle Wigger , Shlomo Shamai

Cloud Radio Access Network (C-RAN) is emerging as a transformative architecture for the next generation of mobile cellular networks. In C-RAN, the Baseband Unit (BBU) is decoupled from the Base Station (BS) and consolidated in a centralized…

网络与互联网体系结构 · 计算机科学 2017-06-21 Tuyen X. Tran , Ayman Younis , Dario Pompili

In this correspondence, we propose hierarchical high-altitude platform (HAP)-low-altitude platform (LAP) networks with the aim of maximizing the sum-rate of ground user equipments (UEs). The multiple aerial radio units (RUs) mounted on HAPs…

系统与控制 · 电气工程与系统科学 2023-12-08 Jeongbin Kim , Seongah Jeong , Seonghoon Yoo , Woong Son , Joonhyuk Kang

This correspondence paper investigates joint design of small base station (SBS) clustering, multicast beamforming for access and backhaul links, as well as frequency allocation in backhaul transmission to minimize the total power…

信号处理 · 电气工程与系统科学 2019-09-04 Jun Xu , Pengcheng Zhu , Jiamin Li , Xiaohu You

In this work, we explore the cross-scale similarity in crowd counting scenario, in which the regions of different scales often exhibit high visual similarity. This feature is universal both within an image and across different images,…

计算机视觉与模式识别 · 计算机科学 2018-08-23 Siyu Huang , Xi Li , Zhi-Qi Cheng , Zhongfei Zhang , Alexander Hauptmann

The fifth generation and beyond wireless communication will support vastly heterogeneous services and use demands such as massive connection, low latency and high transmission rate. Network slicing has been envisaged as an efficient…

信号处理 · 电气工程与系统科学 2020-04-02 Fei Song , Jun Li , Chuan Ma , Yijin Zhang , Long Shi , Dushantha Nalin K. Jayakody Li

The coordination of base stations in mobile access networks is an important approach to reduce harmful interference and to deliver high data rates to the users. Such coordination mechanisms, like Coordinated Multi-Point (CoMP) where…

网络与互联网体系结构 · 计算机科学 2015-03-12 Martin Dräxler , Holger Karl