It is a radio access network (ran) which is referred to under the name eutran standard meant to be a replacement of the umts and hsdpa/hsupa technologies specified in 3gpp releases 5 and beyond unlike hspa, lte's e-utra is an entirely new air interface system, unrelated to and incompatible with w-cdma. Radio access technology: umts network is superimposed over an existing wireless technology. The gprs/umts standards define a network identity called an access point name (apn) an apn identifies the service or network to which a user can connect from a ggsn in a gprs/umts network. 3gpp ts 25401, technical specification group radio access network: utran overall description 3 3gpp ts 25413, technical specification group radio access network: utran iu interface radio access network application part (ranap) signaling.
The feature gsm-umts cell reselection and handover allows end-users with multi-rat (radio access technology) gsm/wcdma mobile stations to roam between utran (umts. This book provides a comprehensive description of radio accessnetworks for umtsthe main content is based upon the release6 version of the 3gpp specifications changes since the release 99version are described while some of the new features from therelease 7 version are introduced. The architecture of evolved umts terrestrial radio access network (e-utran) has been illustrated below the e-utran handles the radio communications between the mobile and the evolved packet core and just has one component, the evolved base stations, called enodeb or enb. Description of 3g architecture: user equipment the 3g system consists of two main parts: the user equipment (ue) and the umts terrestrial radio access network (utran.
This course offers a comprehensive review of the umts/wcdma architecture followed by detailed coverage of the performance and design features contained in the 3gpp specifications for umts release 5 (hsdpa), release 6 (hsupa), and release 7 (hspa+. 3g umts uses cdma techniques (as wcdma) as its multiple access technology, but it additionally uses time division techniques with a slot and frame structure to provide the full channel structure a channel is divided into 10 ms frames, each of which has fifteen time slots each of 666 microseconds length. As illustrated in figure 1, the umts network consists of three subsystems: user equipments (ue), umts terres- trial radio access network (utran), and the core net. It also features discussions on both 3gpp and 3gpp2 evolution paths, the specification process, and future 3g upgrades you get a complete overview of umts systems, information on the latest 3g technology standards, a review of the wideband cdma air interface, network architecture details, and guidance in network planning and management. Summary of umts radio access link security new and enhanced radio access link security features in umts new algorithms - open design and publication encryption terminates at the radio network controller mutual authentication and integrity protection of critical signalling procedures to give greater protection against false base station.
This book sets out to provide the theoretical foundations that will enable radio network planners to plan model and optimize radio networks using state-of-the-art findings from around the globe. Air in a nutshell lzu1089091 r1a description the new antenna integrated radio (air) unit is a single tower-mounted unit that can replace the antenna/s and radio for one sector. Description : xi li presents innovative analytical models and algorithms for the dimensioning of the 3g umts radio access network (ran) the proposed analytical models allow efficient and accurate dimensioning for different evolutions of umts radio access technologies. Umts load control with access class barring which is a new feature being rolled out by carriers that the radio access network(ran) segment.
L provide services for the non-access layer, for example, transmitting messages like call control, session management and mobility management at the control interface l setup, maintenance and release of an rrc connection between ue and utran. In general, complete mobile network system and fixed network systems have a similar architecture as described outlined in evolved 3gpp system and normally consist of an access network and a core network. Applications, and the utran (umts terrestrial radio access network) will be extended by a satellite-based ran (radio access network), ensuring global coverage every day the number of commercial networks in different parts of the world increases. Description : radio network planning and optimisation for umts, second edition, is a comprehensive and fully updated introduction to wcdma radio access technology used in umts, featuring new content on key developments written by leading experts at nokia, the first edition quickly established itself as a best-selling and highly respected book.
Openbts-umts is a linux-based application that uses a software radio to present a umts network to any standard 3g umts handset or modem it builds upon the openbts framework, where the ms or ue is treated as an ip endpoint at the edge of the network. Umts (w-cdma) is one of the third generation wireless systems umts is designed to increase a subscriber's data rates and system capacity this course offers a technical overview of umts, focusing on the umts air interface (wcdma), radio network and core network. Of the umts radio access network, its specific protocol stacks, important features, its specific traffic- and resource control functions and their impacts on the iub dimensioning are studied.