Signaling load analysis in openflow-enabled LTE/EPC architecture

Nguyen, Van‐Giang; Kim, Young-Han

doi:10.1109/ictc.2014.6983272

Cited by 6 publications

(15 citation statements)

References 2 publications

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“…9. For handover procedure, there are four kinds of handovers (intra/inter-GW handover with/without X2 support) as defined in Section 4.4 but no handover procedure was drawn in [16]. Figure 11 shows the call flow for the intra-GW handover with X2 support in the partial OEPC architecture.…”

Section: Partial Oepc Architecturementioning

confidence: 99%

“…In [16], the authors presented two procedures namely initial attachment and UE-triggered service request procedure. The tracking area update procedure only required the presence of eNB, controller, and HSS entity so this procedure is the same as that described in Fig.…”

Section: Partial Oepc Architecturementioning

confidence: 99%

“…For multicast paging support, the corresponding value will be the sum of Equations (15), (16), (18), (19) for handover with X2 support or (20) for handover without X2 support, and (21).…”

Section: Full Oepc Architecturementioning

confidence: 99%

“…1 Comparison between the existing Openflow-enabled LTE/EPC architecture and our proposed architecture. a Partial OEPC architecture [15,16]. b Our proposed full OEPC architecture encapsulation and decapsulation (e.g.…”

Section: Architecture Overviewmentioning

confidence: 99%

“…In our previous study [16], we presented an alternative re-design of LTE/EPC network architecture by using SDN/Openflow technologies. We proposed OEPC (Openflow-enabled LTE/EPC), a new LTE/EPC architecture that is fully realized in Openflow.…”

Section: Introductionmentioning

confidence: 99%

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Proposal and evaluation of SDN‐based mobile packet core networks

Nguyen

Kim

2015

J Wireless Com Network

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Recently, several researchers have proposed adopting software-defined networking (SDN) concepts for mobile network architectures, particularly for LTE-evolved packet core (LTE/EPC). Although several new designs have been introduced for architectures based on SDN or its concrete realization, Openflow, few studies have presented in-depth discussions of real procedures that are relevant to such architectures. To this end, this paper first surveys the current approaches and solutions for adopting SDN/Openflow in LTE/EPC architectures and then introduces a new Openflow-enabled EPC (OEPC) architecture. This work provides detailed analyses of five procedures that commonly occur in LTE/EPC architectures, and the analyses are further elaborated with the separation of the control and data planes and the support of extended Openflow protocol. The analysis shows that the data management of these procedures is simpler relative to traditional LTE/EPC. In addition, in order to prove that efficient data management takes place for these procedures relative to a traditional LTE/EPC architecture, the numbers of signalling messages that are processed by control entities (i.e., the MME and the controller) are taken into account as a metric to evaluate the OEPC architecture. Moreover, the results of a numerical evaluation also show the benefits of this proposal relative to another Openflow-based LTE/EPC architecture.

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Section: Partial Oepc Architecturementioning

confidence: 99%

Section: Partial Oepc Architecturementioning

confidence: 99%

“…For multicast paging support, the corresponding value will be the sum of Equations (15), (16), (18), (19) for handover with X2 support or (20) for handover without X2 support, and (21).…”

Section: Full Oepc Architecturementioning

confidence: 99%

Section: Architecture Overviewmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Proposal and evaluation of SDN‐based mobile packet core networks

Nguyen

Kim

2015

J Wireless Com Network

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SDN and Virtualization-Based LTE Mobile Network Architectures: A Comprehensive Survey

Nguyen

Kim

2015

Wireless Pers Commun

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104

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Software-defined networking (SDN) features the decoupling of the control plane and data plane, a programmable network and virtualization, which enables network infrastructure sharing and the ''softwarization'' of the network functions. Recently, many research works have tried to redesign the traditional mobile network using two of these concepts in order to deal with the challenges faced by mobile operators, such as the rapid growth of mobile traffic and new services. In this paper, we first provide an overview of SDN, network virtualization, and network function virtualization, and then describe the current LTE mobile network architecture as well as its challenges and issues. By analyzing and categorizing a wide range of the latest research works on SDN and virtualization in LTE mobile networks, we present a general architecture for SDN and virtualization in mobile networks (called SDVMN) and then propose a hierarchical taxonomy based on the different levels of the carrier network. We also present an in-depth analysis about changes related to protocol operation and architecture when adopting SDN and virtualization in mobile networks. In addition, we list specific use cases and applications that benefit from SDVMN. Last but not least, we discuss the open issues and future research directions of SDVMN.

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