Test measurement challenges and field environment test planning school of electrical engineering master. The wcdma technology provides the umts system some of the new functionalities on the air interface. In the wcdma iu ps user plane, multiple packet data flows are multiplexed on one or several aal5 pvcs. Protocol set of certain basic rules wcdma protocol stack is based on osi open system interconnection reference model osi reference model,developed by iso, is a set of seven layers. Each layer passes suitable notifications to ensure the transmitted data has been formatted, transmitted, and received. The is95a cellular protocol has been further upgraded to include 14400 bps traffic channels. Point to the eu reference which includes radio link interface and a mobile network protocol stack bound is called lteu u to indicate that it differs from the legacy counterpart eu x2 connectivity neighboring enodebs. Pdf development of lte ue protocol stack at non access.
Umts protocol stack user plane radio link control rlc presents a reliable channel to higher layers by retransmitting erroneous. Lte channels and protocol layers this paper provides an overview of the mac for 3gpp long term evolution lte also referred to as eutran, with a focus on the handset or user equipment ue. The umts signaling protocol stack is divided into access stratum as and nonaccess stratum nas. 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. Crtu is a futureproof investment, as the base units can be. Umts protocol stack consists of access stratumas and non access stratumnas. Nas or the non access stratum is a set of protocols in the umts that is used to convey nonradio signalling between the user equipment ue and the core network. Fundamentals of 3g umts wcdma umts services and applications umts architecture wcdma and physical layer radio resource management signalling mscs 3g umts originating call flow 3g umts terminating call 3gpp umts ue conformance tests description and logs research reports and thesis phd thesis. Wcdma efficiently utilises the radio spectrum to provide a maximum. The radio link control rlc protocol is apart from layer 2 of wcdma protocol architecture.
It supports conventional cellular voice, text and mms services, but can also carry data at high speeds, allowing mobile operators to deliver higher bandwidth applications including streaming and. Each flow uses udp connectionless transport and ip. F2403 wcdmahudpahsupa ip modem technical specification file version f2403 wcdmahsdpahsupa ip modem technical specification general f2403 wcdmahsdpahsupa ip modem is a kind of cellular terminal device that provides data transfer function by public wcdmahsdpahsupa network. Utranspecific control protocols exist in each of the four interfaces. Tunneling protocol gtp is used on the s1 interface between the enodeb and sgw and on the s5s8 interface between the sgw and pgw. Rnc is the service access point for all services utran provides the core network cn.
Wcdma channels osi model communications protocols free. The stack l1 rlc pdcp mac ip v4 or v6 application l1 rlc pdcp mac atm udpip v4 or v6 gtp u aal5. Apr 17, 2003 wcdma wideband code division multiple access is the radio interface for umts. Even bigger problem is that the failure mode of registration varies depending ue protocol stack implementation. Umts channels logical,transport,physical umts channels. User plane speech, data control plane signaling fro call setup etc. 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.
The asynchronous transfer mode atm is defined for umts core transmission. The chapter explains the logical channels and mapping between. However, even it is reduced with the ambition to be true to the original. Atm adaptation layer type 2 aal2 handles circuit switched connection and packet connection protocol aal5 is designed for data delivery. Wcdma is characterised by use of a wider band than cdma. There is a big office building with two blocks, different stairways. Overview of the gsm system and protocol architecture. Dec 16, 2016 umts air interface protocol stack part 2 adel mounir duration. Choose the protocol stack routing direction of 3g data. Just as with s6a, the ietf diameter protocol is used over s6d, eliminating the need for the sgsn to support ss7map signaling towards the hlr, and also allowing for usage of a common set of subscription data for gsm wcdma and lte. Umts wcdma basic concept 3g 1 free download as powerpoint presentation. They may be considered for most of the eutran and is used in most cases of handovers between radio cells. Umts system architecture and protocol architecture overview on overall system architecture umts network architecture and elements mobile station highlevel functions umts domains and strata umtsgprs protocol architecture references. The gtpu means user plane part of the gprs tunneling protocol is the multiplexing wcdma layer that provides identities for individual packet data flow.
Wcdma innerloop power control in wcdma uplink bs performs frequent estimates of the received signaltointerference ratio sir and compares it to a target sir if the measured sir is higher than the target sir, bs will command ms to lower the power if sir is too low, it will command ms to increase its power openloop power control. An overview of the 3g network lunds tekniska hogskola. Design and implementation of radio link control as a part. Rrc connection management establishment and release of radio resources.
Umts network architecture umts protocol stack umts logical, transport and physical channels umts spreading,scrambling and modulation rf wireless tutorials gsm tdscdma wimax lte umts gprs cdma scada wlan 802. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. The protocol stack functions consist of the medium access control mac, radio link control rlc, packet data convergence protocol pdcp, and radio. Nas or core network part is divided based on circuit switchedcs or packet switchedps functionalities. Each of this layer performs certain tasks on the data to make it travel from one device to another over a network. The standard allows operators to choose one out of two standardised protocol suites for transport of. Know protocol stack of lteuu radio interface know the main physicalrrcnas layer procedure know protocol conformance testing of 4glte terminal. Lte control plane protocol stack the radio resource control rrc protocol belongs to the umts wcdma protocol stack and handles the control plane signaling of layer 3 between the ues user equipment and the utran 4. If you continue browsing the site, you agree to the use of cookies on this website. In the original version of the eia tia95b standard, the protocol messages and formats that should be used in the cdma system were defined. As wcdma mobile penetration increases, it allows wcdma networks to carry a greater share of voice and data traffic. F2403 industrial wcdma ip modem 3 pages directindustry. Logical channels at the service access point sap of layer 1 physical layer.
It has additional advantages of high transfer rate, and increased system capacity and communication quality by statistical multiplexing, etc. Lte is a system defined by 3gpp, which is an international partnership of interested companies. Accessing wcdma is the radio access technique for the umts system. An uplink packet is then described, highlighting any differences. The nonaccess stratum architecture evolved from the gsm upper layers and includes. This tutorial on umts covers umts logical channels, transport channels and physical channels. Summarizes and surveys current lte technical specifications and implementation options for engineers and newly qualified support staff concentrating on three mobile communication technologies, gsm, 3gwcdma, and ltewhile majorly focusing on radio access network ran technologythis book describes principles of mobile radio technologies that are used in mobile phones. Protocol layer three is divided between the access and nonaccess strata.
The most information of this message would be the protocol configuration options pco. The umts protocol stack is an enormous project with specifications involving thousands of pages. Also see the osi model, which is a standard example. Connection management handles circuitswitched calls and includes sublayers responsible for call control e. The architecture of the core network may change when new services and features are introduced.
The downlink direction from network to terminal is covered first. In mt6235 datasheet there are 20 pages missing in armdsp interface chapter very often this part has no documentation at all marcin mielczarczyk, krzysztof antonowicz getting the. Long term evolution protocol overview nxp semiconductors. Radio protocols medium access control mac protocol. Transport channels transport channels provide services from physical layer to higher layers transport channels common dedicated broadcast control channel, bcch dl forward access control channel, fach dl paging control channel, pch dl random access control channel, rach ul zeon pdf driver trial. It then follows up with principles, design constraints, and more advanced insights into radio interface protocol stack, operation, and dimensioning for three major mobile network technologies. Umts 3 history of gsm gsm standard is a european standard, which has addressed many problems related to compatibility, especially with the development of digital radio technology. A case study on protocol stack integration for 3gpp lte evolved node b conference paper pdf available november 2014 with 2,624 reads how we measure reads. Handover between lte and 3g radio access technologies.
This paper attempted to condense critical information about the gsm system into 9 pages, but didnt entirely succeed. Wcdma technology provides some advantages for the operator in that it allows the data, but also improves the voice of base. Iso osi model application presentation session transport network data link physical iso. Osi reference model protocol set of certain basic rules wcdma protocol stack is based on osi open system interconnection reference model osi reference model,developed by iso, is a set of seven layers. Sms exists on both circuit switched and packet switched side 6. Page 3 itubdt seminar yaounde september 2006 3 3gpp2 cdma2000 evdo path 1. Look up protocol stack on wikipedia for a discussion of the basic concepts of a protocol stack. Wcdma wideband code division multiple access is the radio interface for umts. Since the subscriber data management part of a network is quite complex to migrate, 3gpp also describes the option. Hidden behind a mountain of acronyms and protocol stack sublayers, however, is the familiar hlrvlrbsmsc model used in most cellular architectures. The wcdma structure is divided vertically into an access stratum and a nonaccess stratum, and horizontally into a control plane and a user plane. The protocol stacks for the cs domain are shown in figure 1. Pdf a case study on protocol stack integration for 3gpp. For an ip bearer, the transport protocol wdp is implemented by user datagram protocol udp.
As a matter of nomenclature, packets received by a layer are called service data unit sdu while the packet. If the data is signaling message, it goes through the cplane stack and if it is user data, it goes through uplane stack. It consists of phylayer 1, maclayer 2,rlclayer 2 and rrclayer 3. On above image, we can see overview of lte protocol stack. Sep 22, 2016 5 umts protocol stack first three layers of the protocol stack are part of utran note. Crtu family are based on a flexible modular concept that covers g and 3g wcdma, hspa test requirements. Wcdma wideband cdma dominant standard outside of us and leading standard for 3g worldwide viewed as 3g migration path for gsmtdma systems cdma 2000 competes directly with umts w cdma evolutionary path for is95 which is the dominant standard in the us tdscdma. This paper provides an introduction to how the lte protocol stack operates. Handoff decisions, congestion control, power control, encryption, admission control, protocol conversion, etc. Voice capacity offered is very high due to interference control mechanisms, including frequency reuse of 1.
Wcdma ran protocols and procedures linkedin slideshare. Wideband code division multiple access wcdma is the physical layer used for universal terrestrial radio access utra fdd mode. Physical channels code,frequency,etc 4 protocol set of certain basic rules 4 wcdma protocol stack is based on osi open system interconnection reference model 4 osi reference model,developed by iso, is a. In this paper, we present the rlc protocol and focus on the acknowledged mode am of rlc to explain its complicated functionality. Radio interface synchronization is responsible for the alignment of radio frames between the rbs and the ue. Open systems interconnection reference model 1984 2007 csce515 computer network programming layer 1. It talks about nas, rrc, pdcp, rlc, mac, and physical layer. Feb 05, 2014 the umts signaling protocol stack is divided into access stratum as and nonaccess stratum nas. Long term evolution lte is the next step forward in cellular 3g services. Details for these parts will be described in related pages, now lets to understand the concept of the protocol stack with an office condition example. Umts wcdma basic concept 3g 1 duplex telecommunications. Umtsgprs system overview from an ip addressing perspective. This video gives overview of lte air interface protocol stack.
Umts tutorial umts network frame protocol basics tutorials. Spreading and scrambling transport channel combining soft handover compressed mode power. Physical layer application presentation session transport network data link physical. Most of the fundamental idea in this page comes from 3gpp 38. Therefore the stack used in this project is a much smaller version with a limited amount of features. Management plane management of network elements, like configuration, faults user plane. Design and development of new features on btsnodebenodeb writing system and design specification and unit test plan taking the ownership of the feature and work with cross functional teams to successful delivery of the feature understanding of end to end scenario and troubleshootingfixing of field and qa reported issues.
Radio interface protocols wcdma for umts wiley online library. Diameter protocol an overview sciencedirect topics. So in many case it is very hard to find the root cause of the problem. Gsm protocol stack gsmprotocolstack gsmprotocolstack. Wcdma ran protocols and procedures chapter 8 iu interface ranap protocol 1 slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. For each protocol, it describes the logical architecture and main functions. As in lte wcdma, nr radio protocol stack has two different stack depending on the type of data that is processed by the stack. Stand alone standard developed in china telcom 2720 4. Transport channels, logical channels, radio bearers. Global system mobile gsm and third 3g and fourth generation 4g mobile technologies. Lucent technologies proprietary umts radio protocol stack layer1 layer2l layer2u layer3 osi radio protocol stack functions. Parallel wireless lte protocol stack development engineer. Details for these parts will be described in related pages, now lets to understand the concept of the protocol stack read more. Pdsch carries user information and signaling from upper layers of protocol stack pdcch channel used by mac scheduler to configure l1l2 and assign resources dl scheduling and ul grants pcfich explains to the ue the format of the dl transmission.
Gsm gprs umts radio network controller radio network controller voice data telcom 2720 wcdma wideband code division multiple access wcdma the air radio interface standard for umts wideband direct sequence spread spectrum variable orthogonal spreading for multiple access ovsf three types of interface. The stack l1 rlc pdcp mac ip v4 or v6 application l1 rlc pdcp mac atm udpip v4 or v6 gtp u aal5 relay l1 udpip v4 or v6 l2 gtp u ip v4 or v6 ms utran 3g sgsn uu iups gn gi 3g ggsn atm udpip v4 or v6 gtp u aal5 l1 udpip v4 or v6 gtp u l2 relay ps domain user plane protocol stack l1 l2 ip v4 or v6 iu gn gi te mt utran packet data. Umts air interface protocol stack part 1 adel mounir. Wcdma is the most widely adopted air interface standard for third generation 3g mo bile networks. As shown in the figure, there are three types of umts channels viz. Wideband code division multiple access, along with umtsfdd, utrafdd, or imt2000 cdma direct spread is an air interface standard found in 3g mobile telecommunications networks.
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