Prose function the device has to establish an rrc connection with the. Observed time difference of arrival otdoa positioning in. Layer is identical, and the radio resource control rrc layer is. Sep 14, 2015 4g lte kpi key performance indicators training course what are lte kpis by telcoma global duration. This registration is known as the network attachment.
Transmit receive data wcdma lte baseband signal generatorprocessor electricaltooptical converter opticaltoelectrical converter. Jun 04, 2017 establishing an rrc connection in lte typically involves the following steps lte rrc connection setup is published by eventhelix in lte long term evolution. This graph shows which files directly or indirectly include this file. A framework to evaluate implementation correctness kai jansen ruhruniversity bochum david rupprecht ruhruniversity bochum. There are some wrappers available to help you use the protocol directly. The initial release of long term evolution lte scaled down the number of rrc states to two, rrc idle and rrc connected 3. So, let us get started without wasting any further time. The railroad commission of texas rrc is a texas regulatory agency. Ue capability information and rrc connection reconfiguration. This is usually the case of system, configuration, temporary, or data files containing data exclusive to only one software and used for its own purposes.
The rrc states can further be characterized as follows. From the enodeb to the rrc, the rrc controls local phy modulation. Lte uu eutran mme s11 serving s5 gateway pdn gateway. These tests must be executed on every lte capable device model before they are commercially released. The msc then analyzes the national destination code of the phone number, which usually comprises the. It is intended as a one stop guide to provide an overview of the otdoa feature for operators and manufacturers interested in the deployment. Be careful not to copy any preambles, chapter titles and other nonasn. Api for processing in ue and enodeb of these messages is implemented in the files uerrccpentity and enbrrccpentity. On downlink, the mac in the ue interprets the transport format.
This paper provides an introduction to how the lte protocol stack operates. Utilizes single carrier modulation and orthogonalfrequency multiplexing using dftspreading in the transmitter and frequency. The uplink data packet processing is similar to the downlink with the exception of some differences related to transmission format selection modulation and. It is a layer that exists between ue and enb and exists at the ip level layer 3network layer. Developed classes for rrc messages system information, paging, rrc connection request, rrc connection reject, rrc connection reconfiguration send function for ue rrc entity and enb rrc entity. What links here related changes upload file special pages permanent link page information wikidata item cite this page. No date contents related product software version 1.
Rrc connection establishment in lte background the first thing ue does after switching on is to synchronize to each frequency and check whether this frequency is from the right operator to which it wants to connect to. Lte is the latest generation of the 3gpp standards iponly network support data rates up to 100 mbps deployment starting in 2009 this presentation will describe all these functions, which consist of the mac, radio link control rlc, packet data convergence protocol pdcp, and radio resource control rrc. Srb1 is used for transport of rrc messages including piggybacked nas. Certification program test plan december 2011 1 revision 1. Well first, the ue needs to register with the network to receive services that require registration. Rrc connection establishment in lte all about wired and. Lte rf optimization areas such as rrc connection setup, bearer drops, coverage issues. There are a good news and a bad news on rrc messages for carrier aggregation.
Protocol specification eventstudio system designer sequence diagram based systems engineering tool. In both cases, the information is processed by the following protocols before being passed to the physical layer for transmission. This is usually the case of some internal data files, caches, temporary files etc. Rrc connection reconfiguration for measuring the second cell. Visualether protocol analyzer wireshark based visual protocol analysis and system design reverse engineering tool. To call b, the phone number of b is sent by a to the msc. The radio resource control rrc protocol is used in umts and lte on the air interface.
How to open and convert files with rrc file extension. We enable technology led organizations to go to market with innovative products and. Lte radio layer 2, rrc and radio access network architecture. Overview long term evolution lte is the next step forward in cellular 3g services. Rethinking rrc state machine optimization in light of recent advancements theodore stoner university of cincinnati theodore. The blackberry is a line of handheld devices and services designed and marketed by blackberry limited. From an lte radio resource control rrc perspective, these calls could take place while the ue is in lte rrc idle state no active session or rrc connected state with an active session. This protocol controls mac, rlc and pdcp layers in the lte air interface connecting an lte ue with an enodeb. Enhancement of the utra optimisation of the utran architecture to ensure the continued competitiveness of the 3gpp technologies for the future lte was the first and only technology recognized by the next generation mobile network alliance to meet its broad requirements target deployment in 2010. Long term evolution protocol overview 1 1 introduction long term evolution lte is important because it will bring up to a 50x performance improvement and much better spectral efficiency to cellular networks. This knowledge transfer is obtained through handson experience using ue based diagnostic tools and scanner tools.
Ue must make the transition to rrc connected mode before transferring any application data, or completing any signalling procedures. Rrc connection setup timer expire s1mme timer expire according to the 3gpp ts 36. The rrc connection release message is used to command the release of an rrc connection. If nas messages are encapsulted in rrc messages, lterrc calls naseps dissector. Lte rrc connection setup lte long term evolution medium. In this case, the ue should prioritize searching of lte frequencies. Radio resource control rrc protocol writes the signaling messages that are exchanged between bs and mobile. This document describes the functionalities for the support of otdoa location in lte as currently defined in 3gpp and oma. Radio resource control rrc in specification, rrc, lte. Lte the umts long term evolution from theory to practice second edition stefania sesia stericsson, france issam tou. For both situations, when the ue is in the rrc idle mode or when it is in the rrc.
Nov 15, 2012 this document will also help developerto start thinking design of rrc in lte. Eps attach type value octet 1 bits 3 2 1 0 0 1 eps attach 0 1 0 combined epsimsi attach. From the editors of the highly successful wcdma for umts, this new book gives a complete and uptodate overview of long term evolution lte in a systematic and clear manner. Index terms 3gpp, lte, radio resource control rrc, machine type communication mtc. The table below provides useful information about the. Good news is that basically there would be only two messages you have to dig into. Information on the current status of this and other etsi documents is available at. Radio resource control rrc for lte the wireshark wiki. Lte is different from other technologies that call themselves 4g because it is.
Long term evolution protocol overview nxp semiconductors. Rrc idle is optimized for low consumption of power and network resources. Establishing an rrc connection in lte typically involves the following steps lte rrc connection setup is published by eventhelix in lte long term evolution. Rrc success rate this is the first part in lte kpi optimization and more related articles will be published soon. Rrc connection release in lte redirectedcarrierinfo loadbalancingtaurequired, csfallbackhighpriority. Lte attach procedure call flow the lte attach procedure call flow is a subject that may seem hard to understand. Mde bde rec cpri opticaltoelectrical converter electricaltooptical converter wcdma lte rrc filter dpd da quadrature modulation dup.
Lte is the latest generation of the 3gpp standards. Lteonly simulations must use the manual attachment method. This model includes the lte radio protocol stack rrc, pdcp, rlc, mac, phy. The state machine is optimized for the mobile broadband mbb use case, as was the overall lte design. Myung 8 lte enabling technologies single carrier fdma scfdma scfdma is a new single carrier multiple access technique which has similar structure and performance to ofdma. Myung 6 requirements of lte peak data rate 100 mbps dl 50 mbps ul within 20 mhz bandwidth. To maintain the perception of alwayson connectivity in lte during a csfb call, in addition to establishing.