Model-Based optimization for JT CoMP in C-RAN

Touati, Hadjer; Castel-Taleb, Hind; Jouaber, Badii; Akbarzadeh, S.

doi:10.1109/infcomw.2019.8845102

Cited by 4 publications

(4 citation statements)

References 14 publications

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“…The improved Shannon capacity expression aims to calculate the bandwidth efficiency of the system and the 5G SNR efficiency. The spectral efficiency utilizing the improved Shannon expression for user's k can be written as [14,30]…”

Section: The Methodologymentioning

confidence: 99%

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Performance Evaluation of Downlink Coordinated Multipoint Joint Transmission under Heavy IoT Traffic Load

Mukhtar

Saeed

Mokhtar

et al. 2022

Wireless Communications and Mobile Computing

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Emerging 5G network cellular promotes key empowering techniques for pervasive IoT. Evolving 5G-IoT scenarios and basic services like reality augmented, high dense streaming of videos, unmanned vehicles, e-health, and intelligent environments services have a pervasive existence now. These services generate heavy loads and need high capacity, bandwidth, data rate, throughput, and low latency. Taking all these requirements into consideration, internet of things (IoT) networks have provided global transformation in the context of big data innovation and bring many problematic issues in terms of uplink and downlink (DL) connectivity and traffic load. These comprise coordinated multipoint processing (CoMP), carriers’ aggregation (CA), joint transmissions (JTs), massive multi-inputs multi-outputs (MIMO), machine-type communications, centralized radios access networks (CRAN), and many others. CoMP is one of the most significant technical enhancements added to release 11 that can be implemented in heterogonous networks implementation approaches and the homogenous networks’ topologies. However, in a massive 5G-IoT device scenario with heavy traffic load, most cell edge IoT users are severely suffering from intercell interference (ICI), where the users have poor signal, lower data rates, and limited QoS. This work is aimed at addressing this problematic issue by proposing two types of DL-JT-CoMP techniques in 5G-IoT that are compliant with release 18. Downlink JT-CoMP with two homogeneous network CoMP deployment scenarios is considered and evaluated. The scenarios used are IoT intrasite and intersite CoMP, which performance evaluated using downlink system-level simulator for long-term evolution-advanced (LTE-A) and 5G. Numerical simulation scenarios were results under high dense scenario—with IoT heavy traffic load which shows that intersite CoMP has better empirical cumulative distribution function (ECDF) of average UE throughput than intrasite CoMP approximately 4%, inter-site CoMP has better ECDF of average user entity (UE) spectral efficiency than intrasite CoMP almost 10%, and intersite CoMP has approximately same ECDF of average signal interference noise ratio (SINR) as intrasite CoMP and intersite CoMP has better fairness index than intrasite CoMP by 5%. The fairness index decreases when the users’ number increase since the competition among users is higher.

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Section: The Methodologymentioning

confidence: 99%

“…In [14], a demonstration of a CoMP throughput analysis for multipoint cooperative amongst cell-edge users and nodes is discussed. The 5G system-level simulations are implemented based HetNet scenario.…”

Section: Background and Related Workmentioning

confidence: 99%

Performance Evaluation of Downlink Coordinated Multipoint Joint Transmission under Heavy IoT Traffic Load

Mukhtar

Saeed

Mokhtar

et al. 2022

Wireless Communications and Mobile Computing

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“…More studies related to our research on CoMP in 5G networks are intensely discussed. In [34], the study discusses the enhancement of user throughput in C-RAN by distributing the available resources of cooperative cells among CoMP and non-CoMP users. In [35], the authors propose a novel JT-CoMP scheme with a path loss model to minimize the network's back-haul traffic.…”

Section: Related Workmentioning

confidence: 99%

CoMP-Aware BBU Placements for 5G Radio Access Networks over Optical Aggregation Networks

Awad

Shehata²,

Gasser³

et al. 2022

Applied Sciences

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The huge traffic demand envisioned in 5G requires radical changes in mobile network architecture. A Centralized Radio Access Network (C-RAN) was introduced as a novel mobile network architecture, designed to effectively support the challenging requirements of future 5G networks. Coordinated Multi-point (CoMP) is one of the technologies aiming to increase user traffic by transforming inter-cell interference into useful signals to maximize cell-edge users throughput. Intra-CoMP means that cooperating RRHs are assigned to the same Base Band Unit (BBU). On the other hand, in inter-CoMP, the cooperating RRHs are assigned to different BBUs, which introduce overhead signalling over an X2 interface. This paper proposes a model for BBU placement in C-RAN deployment over a 5G optical aggregation network. The model aims to minimize the number of users undergoing inter-CoMP, therefore reducing X2 signalling overhead. First, we solve the BBU placement problem using Integer Linear Programming (ILP), which minimizes the number of BBUs and the number of used links. Second, given the output of the ILP model (i.e., BBU locations and routes), we propose a heuristic algorithm to reconfigure the BBUs (i.e., the assignment of the RRHs to their corresponding BBUs), which aims at minimizing the number of users undergoing inter-CoMP. The proposed heuristic algorithm considers minimizing end-to-end delay, the number of used wavelengths, and maximizing multiplexing gain. The results show that up to 97% of inter-CoMP users migrated to intra-CoMP users. This results in a decrease in the X2 traffic, which is mainly used for the coordination between the BBUs.

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“…For JT-CoMP, useful information such as data, channel state information (CSI) and scheduling decision are made available across multiple cells in the network. Multiple base stations (BSs) in the network cooperatively transmit data to users located at the cell boundary to reduce inter-cell interference and thus enhance the total system throughput [1][2][3][4][5][6]. On the other hand, in the CoMP with CS/CB, data for a user is transmitted from one BS for a timefrequency resource.…”

Section: Introductionmentioning

confidence: 99%

Investigation on the BER performance of downlink JT-CoMP-NOMA with different modulation schemes

Katiran

Shah

Abdullah

et al. 2020

IJEECS

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The principle of joint transmission coordinated multipoint with non-orthogonal multiple access (JT-CoMP-NOMA) is to allow multiple cells in the network to cooperatively transmit data to users using the same network resources in frequency and time domains. The approach would be beneficial in enhancing the system performance in the context of spectral efficiency. This paper presents the performance comparison of JT-CoMP-NOMA for several modulation schemes including QPSK, 16-QAM and 64 QAM in downlink transmission in the context of bit error rate. We conduct an investigation to compare the error performance of JT-CoMP-NOMA with NOMA system. Our simulation results demonstrate that the JT-CoMP-NOMA provides lower bit error rate compared to NOMA system.

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Model-Based optimization for JT CoMP in C-RAN

Cited by 4 publications

References 14 publications

Performance Evaluation of Downlink Coordinated Multipoint Joint Transmission under Heavy IoT Traffic Load

Performance Evaluation of Downlink Coordinated Multipoint Joint Transmission under Heavy IoT Traffic Load

CoMP-Aware BBU Placements for 5G Radio Access Networks over Optical Aggregation Networks

Investigation on the BER performance of downlink JT-CoMP-NOMA with different modulation schemes

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