scholarly journals A Novel Coordinated Edge Caching with Request Filtration in Radio Access Network

2013 ◽  
Vol 2013 ◽  
pp. 1-13 ◽  
Author(s):  
Yang Li ◽  
Yuemei Xu ◽  
Tao Lin ◽  
Xiaohui Wang ◽  
Song Ci
Keyword(s):  
Access Network ◽  
Mobile Network ◽  
Network Capacity ◽  
Base Station ◽  
Radio Access Network ◽  
Limited Bandwidth ◽  
Content Caching ◽  
Radio Access ◽  
Caching Scheme ◽  
Average Latency

Content caching at the base station of the Radio Access Network (RAN) is a way to reduce backhaul transmission and improve the quality of experience. So it is crucial to manage such massive microcaches to store the contents in a coordinated manner, in order to increase the overall mobile network capacity to support more number of requests. We achieve this goal in this paper with a novel caching scheme, which reduces the repeating traffic by request filtration and asynchronous multicast in a RAN. Request filtration can make the best use of the limited bandwidth and in turn ensure the good performance of the coordinated caching. Moreover, the storage at the mobile devices is also considered to be used to further reduce the backhaul traffic and improve the users’ experience. In addition, we drive the optimal cache division in this paper with the aim of reducing the average latency user perceived. The simulation results show that the proposed scheme outperforms existing algorithms.

scholarly journals SDR Enabled C-RAN Implementation using OpenAirInterface

2021 ◽  
Author(s):  
Akeem Olapade Mufutau ◽  
Fernando Pedro Guiomar ◽  
Arnaldo Oliveira ◽  
Paulo Pereira Monteiro
Keyword(s):  
Open Source ◽  
Software Defined Radio ◽  
Cellular Network ◽  
Access Network ◽  
Mobile Network ◽  
Radio Access Network ◽  
Research Activities ◽  
Radio Access ◽  
Continuous Dynamic ◽  
Cloud Ran

Abstract Towards enabling 5G radio access technologies and beyond to meet the requirements for continuous dynamic and diverse services, flexibility and scalability of the cellular network are therefore pertinent. The utilization of software-defined radio (SDR) aided with an open-source platform and virtualization techniques are increasingly exposing the realization of desirable flexibility for radio access network (RAN) while enabling the development of a prototype which can be directed at fostering further mobile network research activities. In this paper, we review OpenAirInterface (OAI) implementation and present an OAI based cloud RAN (C-RAN) testbed with which mobile fronthaul (MFH) solutions can be tested.

scholarly journals Zone-Based Cooperative Content Caching and Delivery for Radio Access Network With Mobile Edge Computing

IEEE Access ◽  
2019 ◽  
Vol 7 ◽  
pp. 4031-4044 ◽  
Author(s):  
Ning Wang ◽  
Gangxiang Shen ◽  
Sanjay Kumar Bose ◽  
Weidong Shao
Keyword(s):  
Access Network ◽  
Edge Computing ◽  
Mobile Edge Computing ◽  
Radio Access Network ◽  
Content Caching ◽  
Radio Access

scholarly journals Evaluation of Interference in Ultra-Dense 5G Radio Access Networks with Beamforming

Telecom IT ◽  
2020 ◽  
Vol 8 (4) ◽  
pp. 35-59
Author(s):  
G. Fokin
Keyword(s):  
Radiation Pattern ◽  
Antenna Arrays ◽  
Access Network ◽  
Beam Width ◽  
Base Station ◽  
Access Networks ◽  
Base Stations ◽  
Radio Access Network ◽  
Radio Access Networks ◽  
Radio Access

In this paper, we investigate the dependence of the level of intersystem interference on the beam width of the adaptively formed antenna radiation pattern and the territorial separation of neighboring devices in ultra-dense 5G radio access networks. The results of simulation modeling of a radio access network based on 19 base stations with the parameterization of the antenna array gain by the width of the radiation pattern in the horizontal plane show that when the base station beam is di-rected to the user device and narrowed from 360° to 5°, the level of intrasystem interference decreases by 15 dB compared with the case of omnidirectional antennas. The results of simulation of a radio access network based on 19 three-sector base stations with planar antenna arrays of 64 elements illustrate a significant reduction in the level of interference in comparison with the case of omnidirectional antennas and, in order to obtain zones of a positive signal-to-noise ratio, confirm the need for a territorial separation of neighboring devices by 10–20 % of the range of radio coverage.

An approach for just-in-time radio access network capacity planning in CDMA networks

2008 ◽  
Vol 12 (4) ◽  
pp. 67-82
Author(s):  
Doru Calin ◽  
Andrew K. Mackay ◽  
Thomas B. Morawski ◽  
Hardy Zhang
Keyword(s):  
Capacity Planning ◽  
Access Network ◽  
Network Capacity ◽  
Just In Time ◽  
Radio Access Network ◽  
Radio Access ◽  
Cdma Networks

scholarly journals Enhancing Radio Access Network Performance over LTE-A for Machine-to-Machine Communications under Massive Access

2016 ◽  
Vol 2016 ◽  
pp. 1-16
Author(s):  
Fatemah Alsewaidi ◽  
Angela Doufexi ◽  
Dritan Kaleshi
Keyword(s):  
Network Performance ◽  
Success Probability ◽  
Access Network ◽  
Random Access ◽  
Base Station ◽  
Radio Access Network ◽  
Machine To Machine ◽  
Radio Access ◽  
Access Channel ◽  
Control Traffic

The expected tremendous growth of machine-to-machine (M2M) devices will require solutions to improve random access channel (RACH) performance. Recent studies have shown that radio access network (RAN) performance is degraded under the high density of devices. In this paper, we propose three methods to enhance RAN performance for M2M communications over the LTE-A standard. The first method employs a different value for the physical RACH configuration index to increase random access opportunities. The second method addresses a heterogeneous network by using a number of picocells to increase resources and offload control traffic from the macro base station. The third method involves aggregation points and addresses their effect on RAN performance. Based on evaluation results, our methods improved RACH performance in terms of the access success probability and average access delay.

scholarly journals On the Statistical Distribution of Packets Service Time in Cellular Access Networks

2019 ◽  
Vol 9 (6) ◽  
pp. 4996-5000
Author(s):  
A. Y. Al-Zahrani
Keyword(s):  
Service Time ◽  
Access Network ◽  
Base Station ◽  
Radio Waves ◽  
Core Network ◽  
Actual Distribution ◽  
Radio Access Network ◽  
Radio Access ◽  
A Cell ◽  
Multiple Cells

A cellular communication system is divided into two main parts, core network, and radio access network. This research is concerned with the radio access network part which consists of multiple-cells, each served by a central located base station. Furthermore, the users in each cell are considered to be uniformly distributed inside the cell. In the downlink context, the users’ packets usually arrive at the base station via fiber optic and then are relayed to the users via radio waves of certain frequency/ies. The speeds of delivering users’ packets vary, depending on the users’ location. In this paper, the actual distribution of the service time over different users whose locations are uniformly distributed in a cell served by one base station is analytically found. Simulation results are presented to validate the derived model.

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