This is the interface between the user equipment and the network. Pdf uplink simulation of the umts air interface researchgate. Lucent technologies proprietary 2 objectives describe the requirements and drivers behinds the wcdma air interface. The form of modulation used is easy to generate and enables the handset power amplifiers to operate efficiently whilst also enabling sufficient data to be.
Lte also k nown as evolved utra and evolved utran provides new physical layer concepts and protocol architecture for umts. List the layers umts radio air interface protocol stack and the responsibility of each layer umts channel types and their purpose gain understanding of. This course provides a comprehensive and detailed explanation of the umts air interface. This application note introduces lte fdd and tdd technology and related testing aspects. Scribd is the worlds largest social reading and publishing site. Provide access to the umts terrestrial radio interface rns rnc rns rnc core network node b node b node b node b iu iu iur. Wcdma air interface fundamentals telecommunications radio. The gsm air interface is described here, first in general terms, examining the channels used by the mobile and the network to establish communications, then with increasing detail, the procedures and messages exchanged between the peer layers of the gsm protocol stack. The training presents functionality related with the use of r99 dedicated channels, as well as, hspa. Lte is a highperformance air interface for cellular mobile communications. The training focuses on physical layer operation and procedures and other functions closely related with the physical layer. Umts, fully implemented, gives computer and phone users highspeed access to the internet as they travel. Radio resource management in 3g umts networks diva portal. Ciphering air interface ciphering air interface signalling data integrity.
Authentication sim authentication pin code user authentication gsm, umts, dect, tetra network authentication umts. Dec 16, 2016 full gsm videos on udemy free to buy the full package videos 2g,3g,4g,rf dt, rf optimizat. Key features of lte lte uses adaptive modulation and coding lte uses advanced mimo spatial multiplexing techniques lte supports both fdd and tdd. The gsm air interface of radio interface was given a considerable amount of thought and includes some features that mean that it operates very well and reduces the cost of the mobiles. May 07, 2014 this presentation discusses about the wcdma air interface used in 3g i. Pdf the fdd portion of umts uses a wideband codedivision multiple access wcdma technique, with a frequency reuse of one. Pdf a framework for umts air interface analysis researchgate. Umts system architecture and protocol architecture overview on overall system architecture. Every day the number of equipments sic and their feature sets gets broader. The issues relating to the frequency spectrum are addressed and the umts concept, as identified by etsi smg, is briefly outlined. Later, wcdma was selected as an air interface for umts.
Wcdma is the basis of japans ntt docomo s foma service and. Comprehesive coverage of umts 3g news, licensing, business developments, 3g wcdma telecommunication technology, multi media mobile phones and future communications. The umts air interface in rf engineering shows you how to design, build, and operate the 3g wireless networks that carry most of todays global voice and data communications. The 3g air interface standardization for the schemes based on cma focuses on two main types of. This presentation discusses about the wcdma air interface used in 3g i. Transport channels, logical channels, radio bearers. With service in the 2 ghz band, umts offers global. Introduces the mobile communications sector and umts, including the evolution towards 4g systems, with an overview of the qos concept which is key for the definition of rrm strategies. Umtsgsm dualmode user equipment ue will be connected to the network via umts air radio interface uu at very high data rates up to almost 2 mbps.
Offers a detailed description of the radio interface in umts, as. The specification extracts in this book are intended to provide a concise reference for the many documents related to umts systems. Wcdma air interface course gives the detailed description of the wcdma fdd technology and its use in the umts network. As a subscriber moves from one cell to another in the system, the active base station changes periodically. Lucent technologies proprietary 1 wcdma air interface fundamentals prepared by. The protocols used in the air interface, from the viewpoint of the mobile. The umts network and radio access technology covers all the key aspects of umts and its implementation from both the engineering design and the operator and service providers point of view. Gsm air interface channels part 1 adel mounir youtube.
The umts airinterface in rf engineering shows you how to design, build, and operate the 3g wireless networks that carry most of todays global voice and data communications. The etsi smg decision on the umts air interface, together with its application, based on available information, are discussed. The main objective of admission control is to ensure the free radio resources for a. Ofdma orthogonal frequency division multiple access in downlink and scfdma single carrier frequency division multiple access in uplink. Outside the umts service area, umtsgsm ue will be connected to the network at reduced data rates via the um. It addresses the essential tasks involved in umts network deployment in new regions and within existing 2g networks. Radio resource management strategies in umts wiley online books. The ms of gsm is referred as user equipment ue in umts. In cellular telephone communications, the air interface is the radiofrequency portion of the circuit between the cellular phone set or wireless modem usually portable or mobile and the active base station. Umts embraces the foma, wcdma and hspa air interface technologies, and umts networks can coexist with earlier gsm gprs and edge networks. Umts air interface protocol stack part 1 adel mounir.
The umts airinterface in rf engineering by shingfong su. Kasumi algorithm known umts larger key lengths than in gsm. Umts air interface course description this course provides a comprehensive and detailed explanation of the umts air interface. The protocol stack of the radio interface between wcdma radio access network and the ue consists of a number of protocol layers, each giving a specific service to the next layer above. Full gsm videos on udemy free to buy the full package videos 2g,3g,4g,rf dt, rf optimizat. An umbrella term that encompasses the third generation 3g radio technologies developed by the 3gpp 3rd generation partnership project, a collaborative project designed to produce technical specifications and technical reports for a 3g mobile system based on evolved gsm core networks as well as. A proximity of timecritical functions to the air interface is crucial. The initiatives of the european commission are finally identified. Umts combines three different terrestrial air interfaces, gsms mobile application part map core, and the gsm family of speech codecs the air interfaces are called umts terrestrial radio access utra. Utran interfaces are the most important point to start learning about the whole system. They have the same capabilities even when they roam, through both terrestrial wireless and satellite transmissions. Offers a detailed description of the radio interface in umts, as the basis for the implementation of rrm strategies.
Thus, it is hoped that the synthesis presented in this book will be useful in some way. Universal mobile telecommunications system umts is a 3g cellular telecommunication system. Jun 20, 2011 umts air interface free download as powerpoint presentation. In this context, in order to offer a complete source on the umts air interface and. The protocols used in the air interface, from the viewpoint.
Introduction the airinterface is the central interface of every mobile system and typically the only one to which a customer is exposed. Download citation umts system and air interface architecture network architecture the air interface modes of operation spectrum allocations wcdma and the spreading concept cell isolation. Wcdma air interface fundamentals free download as powerpoint presentation. Umts long term evolution lte technology introduction. Furthermore, mimo antenna schemes form an essential part of lte. Where things start to get interesting is with the power dynamics. In so doing, the architecture of the radio interface, 6 channel structures, the cdma physical layer, the protocols, procedures and operation will all be discussed. After all, the whole umts specification set would probably exceed 4000 pages.
The book explains the rf engineering aspects of umts, key elements of the 3gpp specifications, and practical operation of. Umts gsm dualmode user equipment ue will be connected to the network via umts air radio interface uu at very high data rates up to almost 2 mbps. Umts is a mobile radio standard of the third generation. The fdd portion of umts uses a wideband codedivision multiple access wcdma technique, with a frequency reuse of one. A few years ago, umts technology was at sic the early deployment. Outside the umts service area, umts gsm ue will be connected to the network at reduced data rates via the um. Pdf gsm, 3g, umts, 4g, gprs cours et formation gratuit. In the currently most popular variant for cellular mobile telephones, wcdma imt direct spread is used.
Apr, 2017 gsm air interface channels part 1 adel mounir. 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. Wcdma is the most widely adopted air interface standard for third generation 3g mo bile networks. Utran interface that is between the cn and the radio network controller rnc is. Wcdma air interface fundamentals telecommunications. The air radio interface standard for umts wideband direct sequence spread spectrum variable orthogonal spreading for multiple access ovsf three types of interface. A framework for umts air interface analysis article pdf available in canadian journal of electrical and computer engineering 283. Umts is designed to cope with the growing demand of mobile and internet applications with required quality of service parameters. Although 3g umts uses a totally different radio access standard, the core network is the same as that used for gprs and edge to carry separate circuit switched voice and packet data. A network asynchronous cdma proposal is wcdma in european. The umts world is an 3g mobile system news and information provider. Umts interfaces protocols on different interfaces standard numbers and links to the different standards.
The book explains the rf engineering aspects of umts, key elements of the 3gpp specifications, and practical operation of umts networks. This places one of the toughest challenges to the research and development of both the. Umts networks andreas mitschelethiel, jens muckenheim oct12 3 umts system architecture umts subscriber identity module usim. Radio protocols medium access control mac protocol. Dec 05, 2016 universal mobile telecommunications system. The physical characteristics of the airinterface are particularly important for the quality and success of a new mobile standard. Two modes are specified for the umts air interface. Due to the high chip rates and the effects of intercell interference, simulation is inherently more complicated than most of the other communications systems analysed in the past. Umts air interface free download as powerpoint presentation.
Umtsfdd is an acronym for universal mobile telecommunications system umts frequencydivision duplexing fdd and a 3gpp standardized version of umts networks that makes use of frequencydivision duplexing for duplexing over an umts terrestrial radio access utra air interface. The universal mobile telecommunications system umts is a third generation mobile cellular. In this tutorial you can learn the following topics. Radio resource management strategies in umts wiley. Umtsfdd is an acronym for universal mobile telecommunications system umts frequencydivision duplexing fdd and a 3gpp standardized version of umts networks that makes use of frequencydivision duplexing for duplexing over an umts terrestrial radio access air interface. Pdf an integrated approach is presented for uplink and downlink air interface capacity evaluation and traffic analysis for the multiservice. This radio interface has great capability on which third generation of mobile c slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising.
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