Wireless Network Virtualization: A Survey, Some Research Issues and Challenges

Liang, Chengchao; Yu, F. Richard

doi:10.1109/comst.2014.2352118

Cited by 645 publications

(402 citation statements)

References 110 publications

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“…VRRM is in charge of managing the total available capacity provided by CRRM, through aggregating all the Radio Resource Units (RRUs) from different RATs, which can be OFDM (related to Wi-Fi), OFDMA (related to LTE), CDMA (related to UMTS), and TDMA (related to GSM), and sharing the capacity from separated slices associated with different services of VNOs. By providing isolation and element abstraction, VRRM enables each VNO to deploy its own protocol stack over the same set of RRUs per RAT (e.g., resource-blocks in LTE, codes in UMTS, time-slots in GSM, and carriers in Wi-Fi) [22], therefore, promoting the notion of multitenancy in a virtualised environment with several existing access techniques.…”

Section: Network Architecture and Main Assumptionsmentioning

confidence: 99%

A Service-Oriented Approach for Radio Resource Management in Virtual RANs

Rouzbehani

Correia

Caeiro

2018

Wireless Communications and Mobile Computing

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Virtualisation, as a key role player of future mobile communications, promotes the idea of service-oriented architectures. This paper proposes a model of Radio Resource Management (RRM) for emerging Virtual Radio Access Networks, based on the interaction between two separated management entities: Common-RRM (CRRM) to coordinate the radio resources among the Radio Access Technologies (RATs) and a centralised virtualisation platform on top of it, called Virtual-RRM (VRRM), which is responsible for service orchestration among Virtual Network Operators, enabling the definition of various services and policies, separately from vendors and underlying RATs. The main objective of VRRM is to satisfy the Service Level Agreements associated with different service classes to the highest possible level, within the framework of proportional fairness. On the other hand, CRRM is in charge of mapping the demanded capacity of each service onto the most suitable RATs. The model is further extended to deal with extreme situations of resource shortage, resulting from high traffic loads, by introducing delay to lower priority services. The performance of the proposed model is evaluated in a practical multi-RAT scenario. Results confirm that the isolation of service classes is consistent with the introduced serving weights, while all the demanded capacities from different services are responded by the most suitable RATs. Finally, independent of the variation of traffic load, 100% of the aggregated capacity is used.

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Section: Network Architecture and Main Assumptionsmentioning

confidence: 99%

A Service-Oriented Approach for Radio Resource Management in Virtual RANs

Rouzbehani

Correia

Caeiro

2018

Wireless Communications and Mobile Computing

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“…Handoff may be the procedure for altering the channel (frequency, time-slot, distributing signal, or mixture of them) linked to the current link while a call is progress [20], [22]. It's frequently started possibly by bridging a cell boundary or by collapse in quality of the signal in the present channel.…”

Section: Description Of Handoffmentioning

confidence: 99%

Fast Handoff in Wireless Communication Technology

Tyagi¹

2017

IJWMCIS

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“…However, wireless technology is extremely vulnerable to new threats and exposes the existing profile to additional information security risks [3,4]. For instance, unencrypted or weakly encrypted algorithms allow attackers to read private information, thereby compromising data confidentiality.…”

Section: Introductionmentioning

confidence: 99%

On Virtualization and Security-Awareness Performance Analysis in 5G Cellular Networks

Alenezi¹,

Mellouli²,

Hussein³

2018

JESTR

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Recently, Fifth Generation (5G) cellular networks have gained promise as a paradigm that could provide rich computational resources for users. Virtualization is a key technology for wireless communications, especially in standard Long Term Evolution (LTE) systems, which enable cloud based multi-tenancy business models through providing a shared scalable resource platform for all users. Despite the potential significance of virtualization for cellular networks, several challenges remain to be addressed. For cellular networks, providing multiple levels of security is essential to support different levels in information sensitivity. However, placing different customers' services requirements on a virtualized evolved Node B's (eNB's) scheduler may lead to noticeable security vulnerabilities. In this work, we present an overview of cellular network security issues in a fully virtualized environment along with their preventative measures. Virtualization is implemented by allowing service providers to share their resources while performing different scheduling policies and sharing one eNB. To evaluate the considered framework, the average delays for different traffic types were measured. The results of the simulation showed that virtualization could noticeably reduce average user equipment delay compared with the non-sharing scheme.

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Wireless Network Virtualization: A Survey, Some Research Issues and Challenges

Cited by 645 publications

References 110 publications

A Service-Oriented Approach for Radio Resource Management in Virtual RANs

A Service-Oriented Approach for Radio Resource Management in Virtual RANs

Fast Handoff in Wireless Communication Technology

On Virtualization and Security-Awareness Performance Analysis in 5G Cellular Networks

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