Wireless Networks

November 18, 2019

Digital Signal Processing in the Cloud Radio Access Network (C-RAN)

We are still waiting for the real entrance of the multi-core Digital Signal Processing (DSP) into the mobile networks. The reason why we are still waiting for the real breakthrough of virtualized DSP is basically laying in the type of mobile network functions suitable to be located on the multi-core DSP chips, as the high timing requirements are imposed by the rest of the network. This directly depends on which […]
November 18, 2019

Why Should We Process LTE Digital Signal Processing Functions in the Cloud?

In the following post, I will try to explain the importance and interests of the DSP processing in the cloud, including my vision of how it can be done and why it should be enabled. First of all, the processing of the DSP functions currently in the LTE is supported by the BBU (Baseband unit). BBUs are specialized hardware which process baseband signals coming from the RRUs (Radio Remote Units). […]
November 18, 2019

A Brief Introduction into 5G Mobile Network

In this post, I will try to introduce you a little bit better into the upcoming 5G network. In general, the new generation of mobile networks is called 5G and it has a certain improvement in comparison with previous mobile networks. This mobile network is already tested in the real environment scenarios, apart from the laboratory tests, by several companies like Huawei, Samsung, and Vodafone. The main goals of the […]
May 13, 2019

Edge-Caching tackling in 5G.

Wireless data traffic increases due to the growth in the number of pervasive mobile devices, social networking, and resource-intensive applications of end users [1]. This traffic manifests in diverse domains such as the Internet of Things (IoT) [2], Machine-to-Machine (M2M) communications [3], and cloud computing [4]. Considering the different structures of data traffic stemming from these domains, their organizations are vital. Moreover, enhanced mobile broadband (eMBB), ultra-reliable low-latency communications (URLLC), […]
May 13, 2019

Caching at the Edge

The tremendous data traffic demand and the arrival of new mobile services will lead to unwieldy traffic congestion in mobile communications networks over the next decade. This situation, which is similar to the one experienced in the Internet network in the 2000s, has established parallelisms between 5G –the future mobile communications generation- and the Internet network, thus paving the way for similar solutions to similar problems. In this context, mainly […]
May 13, 2019

Optimization of Radio Access Networks Architecture for 5G

This post is prepared for non-technical readers and the general public.    Introduction Mobile networks are growing fast and pushed by various applications, demanding lower latency, higher traffic volumes, and ultra-reliable connectivity. This led industry to renew their networks while keeping the costs down in order to meet diversified demands with competitive prizes. The International Telecommunication Union (ITU) categorized 5G mobile network services into three use cases [1]: Enhanced Mobile […]
December 5, 2018

Splitting Network Functions in 5G

5G networks are expected to support various applications with a high flexibility meeting diversity of requirements in terms of latency, data rates and massive connectivity.   A 5G network function (NF) supply a particular capability to support communication through a 5G network. NFs are normally virtualized, but some functions may need addition of more specialized hardware. NFs can be the functions that are common functions which are essential for all […]
September 16, 2018

3D Beamforming

3D beamforming is being considered as one of the enabling technologies for fifth generation (5G) wireless networks alongside mm-waves with higher bandwidth, massive MIMO, etc. As the current cellular networks deployed so far, it is seen that the antenna elements at the base station (BS) or the access point are arranged along the horizontal axis to cover beam pattern radiation in the horizontal plane. This arrangement is known as 2D […]
September 14, 2018

Mobile ultra-reliability and low latency in 5G

Mobile networks must meet the emerging demands of services and applications with crucial latency and reliability requirements. Ultra Reliable Low Latency Communication (URLLC) is one of the key services in 5G communications with various applications such as remote control, autonomous driving, and tactile internet. In general, reliability is defined as the probability that data with a given latency is successfully delivered, and it is critical for safety in many up […]