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Fog-aided network architectures for 5G systems encompass wireless edge nodes, referred to as remote radio systems (RRSs), as well as remote cloud center (RCC) processors, which are connected to the RRSs via a fronthaul access network. RRSs…

Information Theory · Computer Science 2017-06-23 Jinkyu Kang , Osvaldo Simeone , Joonhyuk Kang , Shlomo Shamai

Offloading computation-intensive tasks to edge clouds has become an efficient way to support resource constraint edge devices. However, task offloading delay is an issue largely due to the networks with limited capacities between edge…

Networking and Internet Architecture · Computer Science 2023-08-15 Anselme Ndikumana , Kim Khoa Nguyen , Mohamed Cheriet

In modern implementations of Cloud Radio Access Network (C-RAN), the fronthaul transport network will often be packet-based and it will have a multi-hop architecture built with general-purpose switches using network function virtualization…

Information Theory · Computer Science 2019-12-19 Seok-Hwan Park , Osvaldo Simeone , Shlomo Shamai

In a Fog Radio Access Network (F-RAN) architecture, edge nodes (ENs), such as base stations, are equipped with limited-capacity caches, as well as with fronthaul links that can support given transmission rates from a cloud processor.…

Information Theory · Computer Science 2017-12-05 Seyyed Mohammadreza Azimi , Osvaldo Simeone , Avik Sengupta , Ravi Tandon

In this paper, we consider an uplink heterogeneous cloud radio access network (H-CRAN), where a macro base station (BS) coexists with many remote radio heads (RRHs). For cost-savings, only the BS is connected to the baseband unit (BBU) pool…

Information Theory · Computer Science 2019-01-08 Wenchao Xia , Jun Zhang , Tony Q. S. Quek , Shi Jin , Hongbo Zhu

The fog-radio-access-network (F-RAN) has been proposed to address the strict latency requirements, which offloads computation tasks generated in user equipments (UEs) to the edge to reduce the processing latency. However, it incorporates…

Signal Processing · Electrical Eng. & Systems 2022-07-04 Haonan Hu , Yan Jiang , Jiliang Zhang , Yanan Zheng , Qianbin Chen , Jie Zhang

The Cloud-Radio Access Network (C-RAN) cellular architecture relies on the transfer of complex baseband signals to and from a central unit (CU) over digital fronthaul links to enable the virtualization of the baseband processing…

Information Theory · Computer Science 2016-08-24 Wonju Lee , Osvaldo Simeone , Joonhyuk Kang , Shlomo Shamai

In cloud radio access networks (C-RANs), the baseband units and radio units of base stations are separated, which requires high-capacity fronthaul links connecting both parts. In this paper, we consider the delay-aware fronthaul allocation…

Information Theory · Computer Science 2015-03-02 Wei Wang , Vincent K. N. Lau , Mugen Peng

The implementation of a Cloud Radio Access Network (C-RAN) with Full Dimensional (FD)-MIMO is faced with the challenge of controlling the fronthaul overhead for the transmission of baseband signals as the number of horizontal and vertical…

Information Theory · Computer Science 2016-11-15 Jinkyu Kang , Osvaldo Simeone , Joonhyuk Kang , Shlomo Shamai

A cloud radio access network (C-RAN) is considered as a candidate to meet the expectations of higher data rate de- mands in wireless networks. In C-RAN, low energy base stations (BSs) are deployed over a small geography and are allowed to…

Information Theory · Computer Science 2016-02-11 Yigit Ugur , Zohaib Hassan Awan , Aydin Sezgin

Mobile cloud and edge computing protocols make it possible to offer computationally heavy applications to mobile devices via computational offloading from devices to nearby edge servers or more powerful, but remote, cloud servers. Previous…

Signal Processing · Electrical Eng. & Systems 2021-03-31 Seok-Hwan Park , Seongah Jeong , Jinyeop Na , Osvaldo Simeone , Shlomo Shamai

The baseband-up centralization architecture of radio access networks (C-RAN) has recently been proposed to support efficient cooperative communications and reduce deployment and operational costs. However, the massive fronthaul bandwidth…

Information Theory · Computer Science 2015-09-28 Jingchu Liu , Sheng Zhou , Jie Gong , Zhisheng Niu , Shugong Xu

This work considers the downlink of a cloud radio access network (C-RAN), in which a control unit (CU) encodes confidential messages, each of which is intended for a user equipment (UE) and is to be kept secret from all the other UEs. As…

Information Theory · Computer Science 2017-05-02 Seok-Hwan Park , Osvaldo Simeone , Shlomo Shamai

Cloud-Radio Access Network (C-RAN) is characterized by a hierarchical structure in which the baseband processing functionalities of remote radio heads (RRHs) are implemented by means of cloud computing at a Central Unit (CU). A key…

Information Theory · Computer Science 2017-02-01 Zoran Utkovski , Osvaldo Simeone , Tamara Dimitrova , Petar Popovski

In this paper, we investigate the problem of asynchronous coded caching in fog radio access networks (F-RANs). To minimize the fronthaul load, the encoding set collapsing rule and encoding set partition method are proposed to establish the…

Information Theory · Computer Science 2019-01-16 Yanxiang Jiang , Wenlong Huang , Mehdi Bennis , Fu-Chun Zheng

The evolution of telecommunication network towards cloud-native environments enables flexible centralization of the base band processing of radio signals. There is however a trade-off between the centralization benefits and the fronthaul…

Networking and Internet Architecture · Computer Science 2021-01-13 Veronica Quintuna Rodriguez , Fabrice Guillemin , Alexandre Ferrieux , Laurent Thomas

In a cloud radio access network (C-RAN), distributed remote radio heads (RRHs) are coordinated by baseband units (BBUs) in the cloud. The centralization of signal processing provides flexibility for coordinated multi-point transmission…

Information Theory · Computer Science 2021-01-21 Lei You , Di Yuan

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…

Information Theory · Computer Science 2019-05-01 An Liu , Xihan Chen , Wei Yu , Vincent Lau , Min-Jian Zhao

Fog radio access networks (F-RANs) are seen as potential architectures to support services of internet of things by leveraging edge caching and edge computing. However, current works studying resource management in F-RANs mainly consider a…

Networking and Internet Architecture · Computer Science 2018-09-18 Yaohua Sun , Mugen Peng , Shiwen Mao

Wireless positioning systems that are implemented by means of a Cloud Radio Access Networks (C-RANs) may provide cost-effective solutions, particularly for indoor localization. In a C-RAN, the baseband processing, including localization, is…

Information Theory · Computer Science 2016-11-18 Seongah Jeong , Osvaldo Simeone , Alexander Haimovich , Joonhyuk Kang