Long term evolution lte is the next step forward in cellular 3g services. Telcom 2720 22 utran architecture utran contains several rnss. Mobile communications networks mobile communications. It uses stream control transmission protocol sctp as the transport protocol 10 l1 u e rlc mac pdcp rrc nas l1 rlc mac pdcp l1 l2 ip sctp s1ap relay l1 sctp s1ap nas l2 ip l t e u u en od b s 1 m m e m m. Pdf development of lte ue protocol stack at non access. What is 3g umts network architecture by telcoma global duration. In this paper, we present our architecture eclair which. Systems beyond imt2000 imtadvanced is set to introduce evolutionary path beyond 3g. The architecture may often appear similar because the standards were created by similar standards. In telecommunications networks, ranap an acronym for radio access network application part protocol is used in umts signaling between the core.
To request access to protocol stack acceleration libraries for snow 3g, zuc, kasumi, and others please fill out the following form depending on how the website is set up. Its best known work is the development and maintenance of. Tinnirello iub bs rnc new ran architecture iurinterface is. The physical layer layer 1 of the air interface uses gaussian minimum shift keying gmsk for modulat. Comprehensive coverage of umts 3g news, licensing, business developments, 3g wcdma telecommunication technology, multi media mobile phones and future communications. This article provides a thorough overview of this protocol stack, including the sublayers and corresponding interactions in between them, in a manner that is more intuitive than in the respective. This paper provides an introduction to how the lte protocol stack operates. Free software gsm protocol stacks openbsc, osmosgsn, openggsn, osmocombb harald welte. Lte is a system defined by 3gpp, which is an international partnership of interested companies. Stage 2, this standard comes with the detailed descriptions about 5g nr network and protocol architecture. Intro to 3g cellular systems and umts overview david tipper associate professor. On downlink, the mac in the ue interprets the transport format. This document presents the lte network architecture as the first technical document of lte area.
The radio protocol architecture for lte can be separated into control plane architecture and user plane architecture as shown in figure 3 and figure 4. Subnetworkdependent convergence protocol mapping, segmentation. The 3rd generation partnership project 3gpp is an umbrella term for a number of standards organizations which develop protocols for mobile telecommunications. Umts network architectur e cn and an entities and procedures 3gpp ts 23. Instead, it provides services to programs that want to. Tcpip layering architecture a simplified model the network layer hosts drop packets into this layer, layer routes towards destination only promise try my best the transport layer reliableunreliable byte oriented stream application presentation session transport network data link physical transport network application host to network layer. Umts is a complete system architecture as in gsm emphasis on standardized interfaces.
Utran iu interface radio access network application part ranap signalling. Protocol stack n protocol stack aimed to be general, flexible, as possible compatible with legacy protocols and applications maxim reuse n most profiles spring from usage models, however, some profiles are general n profiles can be considered transport profiles upon which. Lapdm handles transport of messages between protocol entities of layer 3 and signaling tasks. It also provides the possibility to move selected ip traffic i. Umts system architecture ue user equipment that interfaces with the user. The gprs protocol stack is an entity within the gprs handset, even if it is software and not a defined hardware element. A stack is a set of data storage locations that are accessed in a fixed sequence. They are transferred over the abis interface as transparent messages and over the a interface using the direct transfer application part dtap. The ss7 stack is compared against the open systems interconnection osi model for communication between different systems made by different vendors. Selection of transport format for each transport channel. The network architecture can be divided into subsystems based on the nature of traffic, protocol structures, physical elements.
Services umts most of 3g licenses in europe required operator to deploy a umts system covering x% of population by a specific date y germany. Performance challenge of 3g over satellite february 2018 3 figure 2. The bearers that are used by the wap protocol stack form the lower interface of the datagram service and allow the wap to be used for various network types with specific bearer functions. This light architecture allows to transfer data from the vehicles to the infrastructure through ipv4 or ipv6 connections using 3g networks or wifi access points, depending on their availability. The tutorial then explains the architecture of umts and the protocols, interfaces, and technologies that go along with it. Technology overview and architecture srini gottumukkala. Tcpip receives lots of scrutiny gsm networks are as widely deployed as the internet.
An overview of the 3g network lunds tekniska hogskola. Vlr mme ss7mapansi41radius diameter diametergtpcv0 and. We move the smgmm protocol of umts, which exists in actually ue, on the protocol stack of iups interface. Pdf standardized protocol stack for the internet of important. The protocol stack or network stack is an implementation of a computer networking protocol suite or protocol family. In the link layer, there are several rlc blocks, indicating the multiplicity of actions that can simultaneously take place in a 3g mobile. The gsm protocol stack on the ms consists of several layers see figure 2, adapted from 7 of which only the lowest three are considered in this paper. Figure 2 shows the protocol architecture for the lower layers of the mobile station. As the top of the stack layer, the application layer is the only one that does not provide any services to the layer above it in the stackthere isnt one. Some of these terms are used interchangeably but strictly speaking, the suite is the definition of the communication protocols, and the stack is the software implementation of them individual protocols within a suite are often designed with a single purpose in mind. So there are several protocol stacks coexisting in the protocol stack pool, as described in figure 5. Also see the osi model, which is a standard example. Umts protocol stack consists of access stratumas and non access stratumnas.
Development of lte ue protocol stack at non access stratum layer. Look up protocol stack on wikipedia for a discussion of the basic concepts of a protocol stack. Design and implementation of simulation testing system for. This layer of the stack controls all the operation of the physical data being transmitted and received for payload data and also for the control of the link. Umts protocol stack user plane radio link control rlc. That is to say, the simulated ue can be used by both gprs and umts 3g protocol stack. Magnan is also a contributing member of the wifi alliance, ieee comsoc and society of automotive engineers. The layering of cellular protocols does not cleanly map to the osi model. Tcpip protocol architecture model system administration. The lte network called eps evolved packet system is an endtoend e2e all ip network. Security aspects convergence of networks and data centric platform. The architecture of evolved packet core epc has been illustrated below. The tutorial then explains the architecture of umts and the protocols, interfaces, and.
Separation of access technology, transport technology, service technology. Umts is a 3g gsm successor standard that is downwardcompatible. Long term evolution protocol overview nxp semiconductors. Service specific coordination function network node interface. Base station subsystem gprs protocol control plane. Pdf protocol stack design for 3rd generation mobile. Performance challenge of 3g over satellite comtech ef data. Eps is divided into two parts lte part which deals with the technology related to a radio access network eutran and epc part which deals with the technology related to a core network.
The user plane protocol stack between the enode b and ue consists of the following sublayers. Nicola accettura at laboratoire danalyse et darchitecture des systemes laas. The state oftheart lte protocol design is the result of a careful crosslayer approach where the protocols interact with each other efficiently. The umts world is an 3g mobile system news and information provider. Umts protocols and protocol testing definition universal mobile telecommunications system umts is envisioned as the. The osi model describes an idealized network communications protocol family. The protocol stack proposed in the present work converges towards the standardized notations of the isoosi and tcpip stacks. Rr messages are mapped to the bss application part bssap in the bsc. Pdcp packet data convergence protocol, rlc radio link control, and. Myung 2 beyond 3g international mobile telecommunications imt2000 introduced global standard for 3g.
Tcpip does not correspond to this model directly, as it either combines several osi layers into a single layer, or does not use certain layers at all. It consists of phylayer 1, maclayer 2,rlclayer 2 and rrclayer 3. Mobile class targets 100 mbps with high mobility and nomadic local area class targets 1 gbpswith low. The gsm rf function forms the layer 1 of the gprs protocol stack. Ranap protocol pdf ran4 radio performance and protocol aspects. Gsm3g protocol security observation both gsm3g and tcpip protocol specs are publicly available the internet protocol stack ethernetwi. To enable rapid deployment of existing and new cross layer optimizations an architecture for cross layer optimizations is essential. There are few more components which have not been shown in the diagram to keep it simple. Find, read and cite all the research you need on researchgate. The protocol stack pool should support gb over ip, iups, gn and gi interfaces. The physical layer itself maintains the continuous connection model, especially on the downlink, where there is continuous transmission.
873 714 417 366 697 23 1412 333 578 757 723 1192 465 737 953 256 595 1393 95 811 783 1208 1011 348 575 219 526 25 1326 323 1207 1131 1031 1460 1430 1121 1056 477 973 894 626 210 35 870 516 580 302 1398