Real Time Demonstration of the Transport of Ethernet Fronthaul based on vRAN in Optical Access Networks

Tayq, Z.; Neto, Luiz Anet; Guyader, Bertrand Le; Lannoy, A. de; Chouaref, M.; Aupetit-Berthelemot, Christelle; Anjanappa, M. Nelamangala; Nguyen, Sinh Ngoc; Chowdhury, Kaushik R.; Chanclou, Philippe

doi:10.1364/ofc.2017.th3a.2

Cited by 11 publications

(11 citation statements)

References 4 publications

(3 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Numerous experimental studies have been performed to evaluate the feasibility of these aforementioned enabling technologies through proof-of-concept (PoC) evaluation in real time RAN experimental set-ups. In line with so, various experimental studies have been carried out for 5G CRAN by introducing different functional splits [7][8], TDM-PON systems [9], virtualization techniques [10][11][12], and RAN slicing [13][14]. Furthermore, to address an ultra-high data rate demand per user in beyond 5G cellular, more than 60 Gbps level transmission in the experimental level using ARoF has been reported by now [15].…”

Section: Background and Related Workmentioning

confidence: 91%

See 1 more Smart Citation

Enabling Technology and Proof-of-Concept Evaluation for RAN Architectural Migration toward 5G and Beyond Mobile Systems

Saha¹,

Yamazaki²

2019

View full text Add to dashboard Cite

In this paper, we address two major issues regarding architectural migration of radio access network (RAN). Firstly, an overview and explicit interpretation of how different enabling technologies over generations are brought up and coordinated for migration from a distributed, to a centralized, and then to a virtualized RAN for 5G and beyond cellular; and secondly, the proof-of-concept (PoC) evaluation to understand the feasibility of these enabling technologies, are addressed. In doing so, we first give an overview of major enabling technologies and discuss their impact on RAN migration. We then evaluate the PoC of major enabling technologies proposed mainly for 5G CRAN, namely functional split options, TDM-PON systems, and virtualization techniques using a mobile CORD based prototype in LTE systems with ideal fronthauls. PoC experimental results with split options 2 and 5 are presented and compared using TCP and UDP traffic. Experimentally, it is shown that the throughput improvement is significant for TCP as compared to UDP with virtualized BBUs, which are about 30%-40% and 40%-45% higher in mean throughputs respectively in downlink and uplink with split 5 than that with split 2. Finally, we point out the major experimental limitations of PoC and future research directions.

show abstract

Section: Background and Related Workmentioning

confidence: 91%

“…15(a)) and the number of vBBUs run in parallel ( Fig. 15(b)) in a physical machine, TCP and UDP throughputs 10 20…”

Section: Impact Of External Delay On the Fhmentioning

confidence: 99%

Enabling Technology and Proof-of-Concept Evaluation for RAN Architectural Migration toward 5G and Beyond Mobile Systems

Saha¹,

Yamazaki²

2019

View full text Add to dashboard Cite

show abstract

“…By employing the technologies of SDN and NFV for RAN, a unified controller manages virtualized RAN functionalities and optimizes it on demand. In [11], the authors evaluated virtualized RAN (vRAN) experimentally using a passive optical network (PON) in FH. A PON helps reduce network costs because RRHs can share the optical fiber that connects to a BBU.…”

Section: B Related Workmentioning

confidence: 99%

Experimental Evaluation of RAN Slicing Architecture With Flexibly Located Functional Components of Base Station According to Diverse 5G Services

et al. 2019

View full text Add to dashboard Cite

The future 5th generation (5G) mobile communication system will be required to support diverse services. Because of the difficulty in addressing the requirements of all these services using the same physical network, ''network slicing,'' which provides a customized logical network corresponding to service requirements, has recently attracted a great deal of attention. In the radio access network (RAN), the appropriate locations of base station functionalities to meet service requirements and achieve efficient network operation differ according to service type. Therefore, we have proposed a novel RAN slicing architecture, which has logical networks (slices) that choose an appropriate functional split option and its placement, to adjust to providing any service. This architecture achieves high flexibility and large scalability by employing a software-defined network and network function virtualization. A prototype is then developed based on the proposed architecture employing a unified controller of open-source software. It can construct slices for three service types: enhanced mobile broadband, ultra-reliable and low-latency communication, and massive machine-type communication, with flexibly located functionalities. In this paper, an experimental evaluation, considering the points of bandwidth consumption in midhaul, the impact of midhaul delay, communication latency, and isolation among slices, shows that the slices have specific performance benefits for each service type and also to achieve efficient network operation. This suggests that the proposed architecture is able to construct slices in a single infrastructure with different features according to the services required and to accommodate various services efficiently. INDEX TERMS 5G mobile communication, software-defined network, network function virtualization RAN slicing, functional splits. I. INTRODUCTION A. GENERAL BACKGROUND Recently, research and development have been actively pursued in the future 5th generation (5G) mobile network. 5G is expected to support diverse services such as highdefinition video distribution, autonomous driving, remotecontrolled robots and the Internet of Things (IoT) [1], and the services are classified roughly into three types; enhanced mobile broadband (eMBB), ultra-reliable and lowlatency communication (URLLC), and massive machine-type communication (mMTC) [2]. The associate editor coordinating the review of this manuscript and approving it for publication was Xiaodong Xu.

show abstract

“…Let us define a family of simple routed networks modeling a Point-to-Multipoint fronthaul (PtMP), which has been designed for C-RAN [8]. The graph G has two sets of vertices, S = {s 0 ,...,s n−1 } and T = {t 0 ,...,t n−1 } of cardinality n and two special nodes: the central source node c s and the central target node c t .…”

Section: The Star Routed Networkmentioning

confidence: 99%

Deterministic Scheduling of Periodic Messages for Cloud RAN

Barth¹,

Guiraud²,

Leclerc

et al. 2018

2018 25th International Conference on Telecommunications (ICT)

View full text Add to dashboard Cite

A recent trend in mobile networks is to centralize in distant data-centers the processing units which were attached to antennas until now. The main challenge is to guarantee that the latency of the periodic messages sent from the antennas to their processing units and back, fulfills protocol time constraints. We show that traditional statistical multiplexing does not allow such a low latency, due to collisions and buffering at nodes. Hence, we propose in this article to use a deterministic scheme for sending periodic messages without collisions in the network thus saving the latency incurred by buffering.We give several algorithms to compute such schemes for a common topology where one link is shared by all antennas. We show that there is always a solution when the routes are short or the load is small. When the parameters are unconstrained, and some buffering is allowed in the processing units, we propose an algorithm (PMLS) adapted from a classical scheduling method. The experimental results show that even under full load, most of the time PMLS finds a deterministic sending scheme with no latency. This paper is an extended version of a previous work presented at ICT conference [1]. arXiv:1801.07029v3 [cs.NI] 7 Jun 2019 be approximated even for very restricted classes of graphs.We introduce in Section IV a simple but very common topology, called the star routed network, that is studied in the rest of the article. In Section V, we study a variant of PALL called PAZL where the waiting times must all be zero. We provide polynomial time algorithms which works when the load or the routes are small, and an FPT algorithm with parameter the number of routes. We give experimental evidences that they find periodic assignments when the network is not too loaded. Finally in Section VI, we propose polynomial time heuristics and an exact FPT algorithm for the general PALL problem and experimentally show that they work extremely well even in loaded networks. In particular, the deterministic communication schemes we design largely outperform the traditional stochastic multiplexing with regard to latency. Related worksStatistical multiplexing even with a large bandwidth does not comply with the latency requirements of C-RAN. Therefore, the current solution [7], [8] is to use dedicated circuits for the fronthaul. Each end-point (RRH on one side, BBU on the other side) is connected through direct fiber or full optical switches. This architecture is very expensive and hardly scales in the case of a mobile network composed of about 10,000 base stations. The deterministic approach we propose has gained some traction recently: Deterministic Networking is under standardization in IEEE 802.1 TSN group [9], as well at IETF DetNet working group [10]. Several patents on concepts and mechanisms for DetNet have been already published, see for example [11], [12].

show abstract

Real Time Demonstration of the Transport of Ethernet Fronthaul based on vRAN in Optical Access Networks

Abstract: A real-time transmission of a new functional split fronthaul interface over PtP and PtMP optical access networks is experimentally demonstrated. The data traffic evolution is investigated as well as the impact of latency and packet loss.

Cited by 11 publications

References 4 publications

Enabling Technology and Proof-of-Concept Evaluation for RAN Architectural Migration toward 5G and Beyond Mobile Systems

Enabling Technology and Proof-of-Concept Evaluation for RAN Architectural Migration toward 5G and Beyond Mobile Systems

Experimental Evaluation of RAN Slicing Architecture With Flexibly Located Functional Components of Base Station According to Diverse 5G Services

Deterministic Scheduling of Periodic Messages for Cloud RAN

Contact Info

Product

Resources

About