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Integrated access and backhaul (IAB) networks have the potential to provide high data rate in both access and backhaul networks by sharing the same spectrum. Due to the dense deployment of small base stations (SBSs), IAB networks connect…

Signal Processing · Electrical Eng. & Systems 2021-06-07 Chao Fang , Charitha Madapatha , Behrooz Makki , Tommy Svensson

We study the problem of caching optimization in heterogeneous networks with mutual interference and per-file rate constraints from an energy efficiency perspective. A setup is considered in which two cache-enabled transmitter nodes and a…

Information Theory · Computer Science 2018-10-16 Estefanía Recayte , Giuseppe Cocco

In this paper, a novel approach for optimizing the joint deployment of small cell base stations and wireless backhaul links is proposed. This joint deployment scenario is cast as a multi-objective optimization problem under the constraints…

Information Theory · Computer Science 2016-11-15 Xiangxiang Xu , Walid Saad , Xiujun Zhang , Xibin Xu , Shidong Zhou

One of the major challenges with cell-free (CF) massive multiple-input multiple-output (MIMO) networks is providing backhaul links for a large number of distributed access points (APs). In general, providing fiber optics backhaul for these…

Information Theory · Computer Science 2023-07-25 Ali Hosseinalipour Jazi , S. Mohammad Razavizadeh , Tommy Svensson

Enabling caching capabilities in dense small cell networks (DSCNs) has a direct impact on file delivery delay and power consumption. Most existing work studied these two performance metrics separately in cache-enabled DSCNs. However, file…

Signal Processing · Electrical Eng. & Systems 2019-03-20 Hao Wu , Hancheng Lu

Increased capacity in the access network poses capacity challenges on the transport network due to the aggregated traffic. However, there are spatial and time correlation in the user data demands that could potentially be utilized. To that…

Information Theory · Computer Science 2023-09-12 Sneha Madhusudan , Charitha Madapatha , Behrooz Makki , Hao Guo , Tommy Svensson

The rapid uptake of renewable energy sources in the electricity grid leads to a demand in load shaping and flexibility. Energy storage devices such as batteries are a key element to provide solutions to these tasks. However, typically a…

Optimization and Control · Mathematics 2019-07-16 Philipp Sauerteig , Karl Worthmann

As the capacity demand of mobile applications keeps increasing, the backhaul network is becoming a bottleneck to support high quality of experience (QoE) in next-generation wireless networks. Content caching at base stations (BSs) is a…

Information Theory · Computer Science 2015-09-03 Xi Peng , Juei-Chin Shen , Jun Zhang , Khaled B. Letaief

Integrated access and backhaul (IAB) network is envisioned as a novel network architecture for increasing the network capacity and coverage. To facilitate the IAB network, the appropriate methods of wireless link association and resource…

Information Theory · Computer Science 2021-08-11 Byungju Lim , Ju-Hyung Lee , Jae-Hong Kwon , Young-Chai Ko

In this paper we investigate the problem of optimal MDS-encoded cache placement at the wireless edge to minimize the backhaul rate in heterogeneous networks. We derive the backhaul rate performance of any caching scheme based on file…

Information Theory · Computer Science 2015-09-21 Valerio Bioglio , Frederic Gabry , Ingmar Land

Caching of popular contents at cellular base stations, i.e., edge caching, in order to eliminate duplicate transmission through the backhaul can reduce the latency of data delivery in $5$G networks. However, since caching can only reduce…

Information Theory · Computer Science 2018-02-14 Tachporn Sanguanpuak , Sudarshan Guruacharya , Ekram Hossain , Dusit Niyato , Nandana Rajatheva , Matti Latva-aho

In this paper, we study the problem of joint inband backhauling and interference mitigation in 5G heterogeneous networks (HetNets) in which a massive multiple-input multipleoutput (MIMO) macro cell base station equipped with a large number…

Networking and Internet Architecture · Computer Science 2017-05-24 Trung Kien Vu , Mehdi Bennis , Sumudu Samarakoon , Merouane Debbah , Matti Latva-aho

Wireless backhauling at millimeter-wave frequencies (mmWave) in static scenarios is a well-established practice in cellular networks. However, highly directional and adaptive beamforming in today's mmWave systems have opened new…

Networking and Internet Architecture · Computer Science 2023-01-13 Amir Ashtari Gargari , Andrea Ortiz , Matteo Pagin , Anja Klein , Matthias Hollick , Michele Zorzi , Arash Asadi

The caching paradigm has been introduced to alleviate backhaul traffic load and to reduce latencies due to massive never ending increase in data traffic. To fully exploit the benefits offered by caching, unmanned aerial vehicles (UAVs) and…

Information Theory · Computer Science 2024-01-18 Emre Gures , Pavel Mach

Integrated access and backhaul (IAB) is one of the promising techniques for 5G networks and beyond (6G), in which the same node/hardware is used to provide both backhaul and cellular services in a multi-hop architecture. Due to the…

Networking and Internet Architecture · Computer Science 2025-07-29 Charitha Madapatha , Piotr Lechowicz , Carlos Natalino , Paolo Monti , Tommy Svensson

Millimeter-wave (mmWave) communication is considered as an indispensable technique for the next-generation backhaul/fronthaul network thanks to its large transmission bandwidth. Especially for heterogeneous network (HetNet), the mmWave…

Information Theory · Computer Science 2018-09-11 Yiwei Sun , Zhen Gao , Hua Wang , Di Wu

The exponential growth of mobile data traffic is driving the deployment of dense wireless networks, which will not only impose heavy backhaul burdens, but also generate considerable power consumption. Introducing caches to the wireless…

Information Theory · Computer Science 2017-07-20 Xi Peng , Yuanming Shi , Jun Zhang , Khaled B. Letaief

Recently, the millimeter wave (mmWave) bands have been investigated as a means to support the foreseen extreme data rate demands of next-generation cellular networks (5G). However, in order to overcome the severe isotropic path loss and the…

Networking and Internet Architecture · Computer Science 2019-11-11 Michele Polese , Marco Giordani , Arnab Roy , Sanjay Goyal , Douglas Castor , Michele Zorzi

The heterogeneous cloud radio access network (H-CRAN) is a promising paradigm which incorporates the cloud computing into heterogeneous networks (HetNets), thereby taking full advantage of cloud radio access networks (C-RANs) and HetNets.…

Networking and Internet Architecture · Computer Science 2016-02-18 Mugen Peng , Yuling Yu , Hongyu Xiang , H. Vincent Poor

In this contribution, we jointly investigate the benefits of caching and interference alignment (IA) in multiple-input multiple-output (MIMO) interference channel under limited backhaul capacity. In particular, total average transmission…

Information Theory · Computer Science 2016-11-18 Matha Deghel , Ejder Baştuğ , Mohamad Assaad , Merouane Debbah