Evolved packet core epc in 4g lte networks by telcoma. Different issues related to the physical deployment in the access, metro and core networks of the 5g network are discussed in section 5 while in section 6 we present software. System architecture evolution sae is the core network architecture of 3gpp s lte wireless communication standard. The transition to ltesystem architecture evolution sae involves a fundamental shift to a flat allip system architecture that impacts every part of the network, with the evolved packet core epc at its center. Gprs architecture works on the same procedure like gsm network, but, has additional entities that allow packet data transmission. Evolved packet core epc for communications service providers. Pdf in the current mobile ipv6 mipv6 systems for the system architecture evaluation sae networks, such as 4th generation 4g mobile. Evolved packet core helps in combining voice and data on an internet protocol service architecture. Cisco will have in its portfolio packet core solution for. Msc is upgraded to 3g msc sgsn is upgraded to 3g 3gpp rel. This course learns you the fundamentals of mobile packet switched ps core network in 2g and 3g, in simple way and short time.
With softwaredefined networking sdn and network functions virtualization nfv supporting the underlying physical infrastructure, 5g comprehensively cloudifies access, transport, and core networks. The epc is the latest evolution of the 3gpp core network architecture. Epc was previously called sae system architecture evolution. The new network core architecture is not backwards. The network of antennas or evolved node b enodeb, gives radio access to the ue anywhere there is coverage. Cisco will enhance its epc packet core solution to support 5g nsa packet core capabilities. Evolved packet core is based on a constant network connection or an alwayson connection.
And in fact, wireless knowledge is essential when optimizing the service itself. We are now able to identify a network badlyimplemented and propose design fixes. Circuit switched domain csd circuit switched service including signaling resource reservation at connection setup 3g versions of gsm components msc, gmsc, vlr, hlr i ucs packet switched domain psd. The sae has a flat, allip architecture with separation of control plane and user plane traffic. To recap, here we have some bulletpoints of what you need to remember. Multitechnology icore network all gs tecore networks. Take an indepth tour of core internet protocols and learn how they work together to move data packets from one network to another.
Mobile packet core engineers, are the engineers who are responsible for mobile packet core network in mobile operators. The gprs core network is the central part of the general packet radio service gprs which allows 2g, 3g and wcdma mobile networks to transmit ip packets to external networks such as the internet. Saes main component is the evolved packet core, also known as an epc. The main component of the sae architecture is the evolved. The functionality of the evolved packet core epc enables the mobile network operator to offer a new set of services to the users through its flat architecture and enables products and network deployments to be built for bandwidthintensive services from the very start.
Along with the packet data transport the gsm network accommodates multiple users to share. Introduction to mobile core network linkedin slideshare. Sae specifies an allip network architecture designed to support endtoend packet services. The gprs system is an integrated part of the gsm network switching subsystem the network provides mobility management, session management and transport for internet. The network further comprises at least one converged media packet gateway bearer element disposed remotely from the converged media packet gateway control element, in communication and under the.
Epc refers to a core network architecture that aggregates access networks including lte and the existing. In fact, there is a school of thought that views the 5gc as ultimately a multiaccess core network that will have a wider impact than 5g ran itself. Tinnirello gn iu ps ip backbone internet sgsn auc eir ggsn sgsn gmsc and ggsn remain the same aucis upgraded more security features in 3g. Architecture monitors sgw, pgw, and core network nfvs. In fact, there is a school of thought that views the 5gc as ultimately a multiaccess core network that will have a. Sgilan describes the network domain that straddles the boundary between the mobile network and the internet packet data network pdn. The 5g core should also be an open platform for services. Evolved packet core epc network equipment for long term. Cisco ultra 5g packet core solution given the several different use cases, each with different needs and requirements, it is going increase the network.
The design of the core network is therefore influential on the overall system architecture and is fundamental to a 5g network. Network architecture functional and physical domains ericsson. Jan 24, 2019 in this video we discuss four focus areas. Normally, a set of capabilities known as valueadded services are deployed in the sgilan domain. These carriergrade packet core network epcs can support millions of mobile subscribers. Communication service providers core network user plane. Sae is the evolution of the gprs core network, with some differences. The evolved packet core communicates with packet data networks in the outside world such as the internet, private corporate networks or. Basic evolved packet core architecture components the evolved packet core epc is an ipbased core network infrastructure that provides packet data services to support the convergence of licensed 2g3g4g and unlicensed wifi radio technologies. Sdnnfvbased mobile packet core network architectures. The ipbased lte network architecture, called the evolved packet core epc is designed to replace the gprs core network, and supports seamless handovers for both voice and data to cell towers with older network technology such as gsm, umts and cdma2000. Packet core network and billing system free download as powerpoint presentation. The architecture of the nfv over the mobile core network can scale dynamically, according to its specific resource requirements e. Lte mobile broadband networks might look like an obvious job for a wireless network engineer.
In gsm, the architecture relies on circuitswitching cs. The 3g packet core architecture consists of the universal mobile telecommunications system umts packetswitched ps domain or general packet radio service gprs support nodes gsn, the gateway contents 3g core network realities pg. Epc is an ipbased, multiaccess core network that makes it possible for operators to deploy one packet core network for multiple 3gpp radio access technologies gsm, hspa, and lte 20. Evolved packet core epc, which was specified at the same time as lte 3gpp release 8, as the core network to accommodate lte and other radio access systems 1. This survey aims at providing a comprehensive survey of stateoftheart research work, which leverages sdn and nfv into the most recent mobile packet core network architecture, evolved packet core. Core network is one of the main and important architectural component of mobile network systems.
Intel corporation processing applications on multicore intel. This covers the 5g core network as it is today after june 2018s publication of rel 15 stage 3. Evolved packet core epc is a framework for providing converged voice and data on a 4g longterm evolution lte network. Mobile packet core network contains different technologies, 2g3g, and 4glte. Pdu sessions and qos flows, core network architecture and components, network functions virtualization and finally network slicing. Common ip architecture core ip unified communications voice features ecommerce web hosting location services other feature. Cisco will support 5g nsa features in its existing epc packet core network functions so that operators, with cisco epc packet core solution, can just do software upgrade and buy 5g nsa licenses to turn on. Evolved packet core epc for communications service. Mobile core network an overview sciencedirect topics. With this updated edition, youll dive into the aspects of each protocol, including operation basics and security risks, and learn the function of network hardware such as switches and routers. Core network the core network cn and the interface i u are separated into two logical domains. We unveiled the three tier architecture and the collapsed core architecture as well, discussing their benefits. When an enodeb receives the request from the ue, it will forward it to the core network.
A concatenation of policy decision function pdf and charging. Packet guide to core network protocols oreilly media. An evolved packet core network comprises a converged media packet gateway control element including a gtpc function of sgw, pgw, and pcscf and atcf functions. A standard lte system architecture consists of an evolved umts terrestrial radio access network, more commonly known as eutran, and the system architecture evolution, also known as sae. With service providers needs and concerns in mind we have developed the dualmode 5g core solution. Packet core network and billing system general packet radio. Long term evolution lte is the fourth generation of wireless technology, enabling faster and richer applications while streamlining the network infrastructure over ip. The journey to 5g core is not simple, though, and will imply a technology shift with the adoption of a new 3gpp defined network architecture servicebased architecture and new network functions built on cloud native technology. But underneath the antennas, the core network engineer is the one that ensures full connectivity in the entire mobile network although 3g was the first technology to give real mobile access to the web, it wasnt. The highlevel network architecture of lte is comprised of following three main components. Comparision of 3g wireless networks and 4g wireless networks. Carriergrade mobile packet core network on aws awsstatic. Learn 2g3g mobile packet core in 2 hrs mobile packet core. The epc consists of the mobility management entity mme1, serving gateway sgw2, packet data network gateway pgw3, and policy and charging rules function pcrf4.
In the current mobile ipv6 mipv6 systems for the system architecture evaluation sae networks, such as 4th generation 4g mobile network, the data delivery is performed basing on a centralized mobility network anchor between evolved node b enb and serving gateways sgw, and also between sgw and packet data network gateway pgw. From chapter 4 it explains in detail intra epc mobility like initial attach, tracking area procedures, detach procedures initiated by different entities in the core network. Packet core network and billing system general packet. The evolved packet core epc is an ipbased core network infrastructure that. This paper aims to help the developers seeking a methodology for how to optimally use the powerful intel multicore processors for packet. This survey aims at providing a comprehensive survey of stateoftheart research work, which leverages sdn and nfv into the most recent mobile packet core. Us9544337b2 converged media packet gateway for a novel lte. This article looks at the evolved packet core epc, the core network of the lte system, giving an overview of the architecture of the core network, describing some of its key elements. Core network gsmgprsbased iu cs pstn msc vlr gmsc hlr changes in the core network. The servicedriven 5g network architecture aims to flexibly and efficiently meet diversified mobile service requirements.
Comparision of 3g wireless networks and 4g wireless. In addition, epc provides a number of features to the operator in order to. Lte is a wireless technology for access networks and. Core network will be changed in epc which stands for evolved packet core. Zonghua zhang, ahmed meddahi, in security in network functions virtualization, 2017. This data network overlaps a secondgeneration gsm network providing packet data transport at the rates from 9. It allows us to build and maintain competence in packet core with flexible training packages and effective flows it includes delta training in line with product roadmaps it provides a range of products for engineers at various. According to this new system, every network system will be in process of change. Epc evolved packet core current system3g is moving to lte gradually. Us9544337b2 converged media packet gateway for a novel. Thus, the current 3g packet core architecture is typically a centralized network design with the ggsns deployed in major data centers, and all the data services are backhauled from the sgsns which are strategically deployed in regional serving offices. Epc node commissioning and integration network target. Aug 09, 2018 evolved packet core epc is a framework for providing converged voice and data on a 4g longterm evolution lte network.
Evolved packet core an overview sciencedirect topics. A tutorial on the funtionality by jatinder jasbir singh. The evolved umts terrestrial radio access network eutran. Pdf a flat mobile core network for evolved packet core based. The evolved packet core epc the epc is the brain of the network. The core will exist in a cloudbased environment, enabling network slicing that can offer customized connectivity and all slices can run on the same, shared infrastructure. The epc is a multiaccess core network based on the internet protocol ip that enables operators to deploy and operate one common packet core network for 3gpp radio access lte, 3g, and 2g, non3gpp radio access hrpd, wlan, and. A flat mobile core network for evolved packet core based. A network should be scalable, resilient and easy to manage. Entire network receives the packet chicago paris san new york francisco tokyo network chicago paris san new york francisco. Network slicing is an important bridge from a 4g core to a new 5g core and is a key component of a 5gready network investment strategy.
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