scholarly journals Joint Design of Beamforming and Edge Caching in Fog Radio Access Networks

2021 ◽  
Vol 2021 ◽  
pp. 1-8
Author(s):  
Wenjing Lv ◽  
Rui Wang ◽  
Jun Wu ◽  
Zhijun Fang ◽  
Songlin Cheng
Keyword(s):  
Access Network ◽  
Taylor Series Expansion ◽  
Joint Design ◽  
Radio Access ◽  
Second Order Cone ◽  
Successive Linear Approximation ◽  
Fog Radio Access Network ◽  
Processing Techniques ◽  
Edge Caching

In this paper, we study a novel transmission framework based on statistical channel state information (SCSI) by incorporating edge caching and beamforming in a fog radio access network (F-RAN) architecture. By optimizing the statistical beamforming and edge caching, we formulate a comprehensive nonconvex optimization problem to minimize the backhaul cost subject to the BS transmission power, limited caching capacity, and quality-of-service (QoS) constraints. By approximating the problem using the l 0 -norm, Taylor series expansion, and other processing techniques, we provide a tailored second-order cone programming (SOCP) algorithm for the unicast transmission scenario and a successive linear approximation (SLA) algorithm for the joint unicast and multicast transmission scenario. This is the first attempt at the joint design of statistical beamforming and edge caching based on SCSI under the F-RAN architecture.

scholarly journals User Preference Learning-Based Edge Caching for Fog Radio Access Network

2019 ◽  
Vol 67 (2) ◽  
pp. 1268-1283 ◽  
Author(s):  
Yanxiang Jiang ◽  
Miaoli Ma ◽  
Mehdi Bennis ◽  
Fu-Chun Zheng ◽  
Xiaohu You
Keyword(s):  
Access Network ◽  
User Preference ◽  
Preference Learning ◽  
Radio Access Network ◽  
Radio Access ◽  
Fog Radio Access Network ◽  
Edge Caching

scholarly journals Energy-Efficient Joint Design of Fronthaul and Edge Links for Cache-Aided C-RAN Systems with Wireless Fronthaul

Entropy ◽  
2019 ◽  
Vol 21 (9) ◽  
pp. 860
Author(s):  
Junbeom Kim ◽  
Daesung Yu ◽  
Seung-Eun Hong ◽  
Seok-Hwan Park
Keyword(s):  
Energy Efficient ◽  
Access Network ◽  
Efficient Design ◽  
Joint Design ◽  
Cloud Radio Access Network ◽  
Radio Access ◽  
Hard Information ◽  
Efficient Scheme ◽  
The Impact ◽  
Edge Caching

This work addresses the joint design of fronthaul and edge links for a cache-aided cloud radio access network (C-RAN) system with a wireless fronthaul link. Motivated by the fact that existing techniques, such as C-RAN and edge caching, come at the cost of increased energy consumption, an energy efficiency (EE) metric is defined and adopted as the performance metric for optimization. As the fronthaul links can be used to transfer quantized and precoded baseband signals or hard information of uncached files, both soft- and hard-transfer fronthauling strategies are considered. Extensive numerical results validate the impact of edge caching, as well as the advantages of the energy-efficient design over the spectrally-efficient scheme. Additionally, the two fronthauling strategies—the soft- and hard-transfer schemes—are compared in terms of EE.

Joint radio resource allocation in fog radio access network for healthcare

2018 ◽  
Vol 12 (5) ◽  
pp. 1277-1288 ◽  
Author(s):  
Shiyuan Tong ◽  
Yun Liu ◽  
Hsin-Hung Cho ◽  
Hua-Pei Chiang ◽  
Zhenjiang Zhang
Keyword(s):  
Resource Allocation ◽  
Access Network ◽  
Radio Resource Allocation ◽  
Radio Resource ◽  
Radio Access Network ◽  
Radio Access ◽  
Fog Radio Access Network

Use of Traffic Separation Techniques for the Transport of HSPA and R99 Traffic in the Radio Access Network with Differentiated Quality of Service

2010 ◽  
pp. 863-878
Author(s):  
Xi Li ◽  
Yasir Zaki ◽  
Thushara Weerawardane ◽  
Andreas Timm-Giel ◽  
Carmelita Görg ◽  
...  
Keyword(s):  
Quality Of Service ◽  
Potential Benefit ◽  
Access Network ◽  
Significant Gain ◽  
Bandwidth Utilization ◽  
Radio Access Network ◽  
Radio Access ◽  
Maximum Utilization ◽  
Quantitative Evaluations

This article presents various traffic separation approaches to transmit HSPA (HSDPA/HSUPA) traffic in the existing ATM-based UMTS Radio Access Network, together with Release 99 (R99) traffic. The traffic separation technique enables QoS differentiations of HSPA and R99 traffic, while aiming to achieve a maximum utilization of the transport resources in the radio access network. The potential benefit of applying traffic separation and its impact on the performance of the transport network as well as the end users are explored in this article. The quantitative evaluations are provided by simulations. The results presented are obtained from a UMTS simulation model developed in this work which can transmit HSDPA and HSUPA traffic as well as R99 traffic simultaneously. The presented results demonstrate that applying traffic separation between HSPA and R99 traffic can considerably improve the performance of both HSPA and R99 traffic, and as well bring significant gain on efficient bandwidth utilization.

scholarly journals Obtaining More Realistic Cross-Layer QoS Measurements: A VoIP over LTE Use Case

2013 ◽  
Vol 2013 ◽  
pp. 1-10 ◽  
Author(s):  
F. Javier Rivas ◽  
Almudena Díaz ◽  
Pedro Merino
Keyword(s):  
Quality Of Experience ◽  
Access Network ◽  
Added Value ◽  
Cross Layer ◽  
Use Case ◽  
Lte Networks ◽  
Testing Environment ◽  
Radio Access ◽  
Open Issue

We introduce a real-time experimentation testbed in this paper which enables more realistic analysis of quality of service (QoS) in LTE networks. This testbed is envisioned for the improvement of QoS and quality of experience (QoE) through the experimentation with real devices, services, and radio configurations. Radio configurations suggested in the literature typically arise from simulations; the testbed provides a real and controlled testing environment where such configurations can be validated. The added value of this testbed goes a long way not only in the provision of more realistic results but also in the provision of QoS and QoE cross-layer measurements through the correlation of information collected at different layers: from service and IP levels to radio and protocol parameters. Analyzing the interlayer dependencies will allow us to identify optimal settings for the radio access network and service parameters. This information can be used to suggest new cross-layer optimizations to further improve quality of experience of mobile subscribers. As a use case, we examine VoIP service over LTE, which is currently an open issue.

scholarly journals RADIO ACCESS NETWORK REQUIREMENT FOR NEW DEPLOYMENT OF WIMAX IN DHAKA

2016 ◽  
pp. 175-179
Author(s):  
Tawhid Kawser ◽  
MOHAMMED R. AL-AMIN ◽  
KHONDOKER Z. ISLAM ◽  
SIFAT-E- MOHAMMAD
Keyword(s):  
High Speed ◽  
Access Network ◽  
Mobile Wimax ◽  
Radio Network ◽  
Planning Tool ◽  
Radio Access ◽  
High Speed Data ◽  
Simulation Results ◽  
Radio Planning

Mobile WiMAX is expected to be the next generation radio-interface, complementing WLAN and challenging EVDO/HSPA/LTE. High speed data rate, reduced latency, better Quality of service, and mobility can allow WiMAX to meet the rapidly growing demand of the users. A study of WiMAX Radio Network Planning (RNP) for an urban area like Dhaka city in Bangladesh is presented in this paper in order to help predetermine the radio access infrastructure requirements. A suitable radio planning tool has been used for this purpose. The simulation results of throughput and Carrier to Interference plus Noise Ratio (CINR) are provided.

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