Utran transport channel to physical channel mapping 3gpp release 99. Umts offers a consistent set of services to mobile computer and phone users, no matter where they are located in the world. These channels are used by lower layers to provide services to the upper layers. Evolution towards 3gumts, 2nd edition, published by wiley juan melero is the editor of gsm, gprs and edge performance. Universal mobile telecommunications system umts, physical channels and mapping of transport.
The information flows between the different protocols are known as channels and signals. Outlineoutline transport channels and their mapping to physical channels spreading and modulation user data transmission dedicated transport channel. Test measurement challenges and field environment test planning school of electrical engineering master. For example, if a ue is category 14 device and uses 64 qam and does not use mimo, it use table g for cqitransport block size mapping as shown below. Umts is an umbrella term for the third generation radio technologies developed within 3gpp. Physical channels and mapping of transport channels onto physical channels fdd 3g ts 25. Mapping of logical channels on transport channels 2. Channels and arfcn slightly different in other frequency bands a tdma frame is defined on the radio carrier 8 users per carrier c telcom 2700 17 hannel rate is 270.
Umts logical channels and transport channels 3glteinfo. Umts channels logical,transport,physical umts channels. As shown in the figure, there are three types of umts channels viz. Handover between lte and 3g radio access technologies. This course provides a comprehensive and detailed explanation of the umts air interface. Nr frequency band bands carrier aggregation dual connectivity moved to. Mapping of transport channels to physical channels. Lte technology works based on three channel types viz. Developed and maintained by the 3gpp 3rd generation partnership project, umts is a component of the international telecommunications union imt2000 standard set and compares with the cdma2000 standard set for networks based on the competing cdmaone.
Resource allocation in lte electrical and computer. 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. At last, specific mapping rules between the logical channels and the transport channel are exist. Channels are simply a tool for specifying and describing the various communication and data related services. Gsm channels university of engineering and technology. Lte channel mapping logical transport physical lte.
Physical channels and mapping of transport channels onto. The umts world is an 3g mobile system news and information provider. Umts channel physical layer channel mapping transport channel format cell synchronisation osi model osi model transmitting raw bits over communication channel raw transmission of the physical layer into a line that appears free from transmission errors frames controls the operation of the subnet. Pdf admission control and channel mapping strategies for. Resource allocation in lte gwanmo ku adaptive signal processing and information theory research group nov. The color green indicates a logical channel can be mapped on a transport channel. Wcdma for umts radio access for third generation mobile communication edited by harri holma and antti toskala. In 1,2,3 several optimizationmodels are suggested and heuristics methods such as tabu search or greedy are used to solve them. Logical channels and transport channels mapping mapping in uplink. Rate matching fit bits into physical channel mapping of coded composite transport channel on multiple physical. Functional layer in the umts protocol stack between core network cn and user equipment ue supporting signaling and traffic between these two elements mac functions mapping between logical channels and transport channels scheduling information reporting managing harq logical channel prioritization. Physical channels and modulation release the present document has been developed within the 3rd generation partnership project 3gpptm and may be further elaborated for the purposes of 3gpp. The tctf field indicates the common logical channel type, or if a dedicated logical channel is used.
I am available here for support you and always uploading video for you. Your contribution will go a long way in helping us. The present document has not been subject to any approval process by the 3gpporganizational partners and shall not be implemented. In case of dispute, the reference shall be the printing on etsi printers of the pdf version kept on. Mapping between logical channels and transport channels. Aug 25, 2009 a channel dedicated to one ue used in uplink only. Carries paging messages that originated from paging control channel. For example speech is sent on the logical channel traffic channel which during the transmission is allocated a certain physical channel, say ts 6 on carrier 0. They were allocated by delegates to the world administrative radio conference warc92 held in malagatorremolinos, spain between 3 february 1992 and 3 march 1992. Address translation and mapping conversion of one address to another address of the same or different type, i. Wcdma osi model radio resource control rrc logical channels rlc rlc rlc what is transmitted medium access control mac transport channels how it is transmitted physical layer physical channels code,frequency,etc. Ul physical channel processing scrambling of coded bits in each of the code words to be transmitted on a physical channel modulation of scrambled bits to generate complexvalued modulation symbols transform precoding of the complexvalued modulation symbols to complex symbols mapping of complexvalued symbols to resource elements. Carry the large majority of data and signaling messages across air interface.
The umts signal bandwidth is normally considered to be 5 mhz but this figure includes the 0. Physical channels and mapping of transport channels onto physical channels fdd. In the uplink direction particularly, the below mappings between. A channel is divided into 10 ms frames, each of which has fifteen time slots each of 666 microseconds length. It is used by many logical channels like ccch, dcch dtch. What is umts universal mobile telecommunications service. Evolution towards 3gumts, 2nd edition, published by wiley. Umts tutorial pdf version quick guide resources job search discussion the universal mobile telecommunications system umts, based on the gsm standards, is a mobile cellular system of third generation that is maintained by 3gpp 3rd generation partnership project. In order to obtain the arfcnuarfcnearfcn, you will need to enter field test mode. This tutorial on umts covers umts logical channels, transport channels and physical channels. The edch is subject to nodeb controlled scheduling and harq. An uplink packet is then described, highlighting any differences. The access points to the layer l2l3 are transport channels. Umts universal mobile telecommunications service is a thirdgeneration broadband, packetbased transmission of text, digitized voice, video, and multimedia at data rates up to 2 megabits per second.
The umts frequency bands are radio frequencies used by third generation 3g wireless universal mobile telecommunications system networks. One central problem in the network planning and optimisation of wcdma geo satellite networks is the efficient use of the limited satellite resources such as power, capacity and bandwidth, task that is under the responsibility of radio resource. Lte eutran and its access side protocols radisys white paper 5 mapping of physical, transport and logical channels figure 7 depicts the mapping between different types of logical channels, transport channels, and physical channels in lte. As you see in the table, the range of cqi value is 030. Lte uses several different types of logical, transport and physical channel, which are distinguished by the kind of information they carry and by the way in which the information is processed. Timo halonen is the editor of gsm, gprs and edge performance. Mapping of these channels is shown in below pictures. The downlink direction from network to terminal is covered first. Like any form of wireless data link, the data needs to be managed to enable the system to handle it efficiently and effectively. This page allows you to calculate the exact frequency from the channel numbers for 5g nr, 4g lte, umts, gsm, cdma and iden networks. Umts carrier frequencies are designated by a utra absolute radio frequency channel number, uarfcn. Umts is designed to cope with the growing demand of mobile and internet applications with required quality of service parameters. Wcdmahspa basics for umts kari aho project and business development manager kari. The cross reference between gsm, umts, 3gpp and etsi identities can be.
Downlink snr to cqi mapping for different multiple antenna. Pdf performance of umts packet service over dedicated. Outline resources in lte resource grid, resource block, slot, subframe control information. Various type of data is exchanged between ue and base station over the radio channel. It is also worth noting that the frequency bandwidth used for the tdscdma variant of 3g umts used in china is 1. In case of dispute, the reference shall be the printing on etsi printers of the pdf version kept on a.
An operator needs 3 4 channels 2x15 mhz or 2x20 mhz to be able to build a highspeed, highcapacity network. Selection of the transport format based on current needs 3. To manage the data carried, the 3g umts radio interface uses a series of data channels which can be categorised as logical, physical or transport channels. Logical channels define what type of information is transferred. As they tranverse between layers they map to other layer frames. Carries paging messages that originated from paging control channel pcch. Common channel can be used by any user at any time. Long term evolution protocol overview nxp semiconductors. In a macrocell, the coherence bandwidth of the signal is in the order of 1 mhz. Highspeed downlink packet access antti toskala, harri holma, troels kolding, frank frederiksen and preben mogensen this chapter presents highspeed downlink packet access hsdpa for wcdmathe key new feature included in release 5 speci. This transport channel is the main channel for uplink data transfer. Before full commercial deployment of lte, downlink snr to cqi mapping for different multiple antenna techniques can be of enormous significance for the operators. Umts channel ppt1 osi model channel communications.
The following sections describe the srvcc from lte to 3gpp2 1xcs and lte to 3gpp utrangeran cs networks. In so doing, the architecture of the radio interface, 6 channel structures, the cdma physical layer, the. Upstream or downstream, channel mapping is the key to ongoing success. The universal mobile telecommunications system umts is a third generation mobile cellular system for networks based on the gsm standard. A logical channel will carry information of a specific type and a number of these channels may be combined before being mapped onto the same physical channel.
How channel mapping in wcdma broadcast control channel dtch dedicated traffic channel rach random access channel fach forward access channel dsch downlink shared channel dcch dedicated control channel cpch common packet channel ctch common traffic channel dch dedicated transport channel pcch paging control channel pch paging channel ccch common control channel. Mar 05, 2014 how channel mapping in wcdma broadcast control channel dtch dedicated traffic channel rach random access channel fach forward access channel dsch downlink shared channel dcch dedicated control channel cpch common packet channel ctch common traffic channel dch dedicated transport channel pcch paging control channel pch paging channel ccch common control channel. Aug 03, 2017 this channel is mapped to physical multicast channel pmch this is basically used for mbms services. Scribd is the worlds largest social reading and publishing site. These all three types of channel are present in downlink as well as uplink direction. Channel mapping table throughout call processing this is only an example case and mapping especiall loch no can vary depending on situations. Evolution towards 3gumts, 2nd edition, published by wiley javier romero is the editor of gsm, gprs and edge performance. The following figure shows the channel mapping of logical channels, transport channels and physical channels.
Integer programming methods for planning are shown in 12, power control and capacity issues are treated in 4,11. The radio access specifications provide for frequency division duplex fdd and time division duplex tdd variants, and several chip rates are provided for in the tdd option, allowing utra technology to operate in a wide range of bands and coexist with other radio access technologies. Umts air interface course description this course provides a comprehensive and detailed explanation of the umts air interface. 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. In the currently most popular variant for cellular mobile telephones, wcdma imt direct spread is used. Single radio voice call continuity from lte srvcc service for lte comes into the picture when a single radio user equipment ue accessing ims. Optimization methods for umts radio network planning. Comprehesive coverage of umts 3g news, licensing, business developments, 3g wcdma telecommunication technology, multi media mobile phones and future communications. In case of dispute, the reference shall be the printing on etsi printers of the pdf version kept on a specific network drive. Transport channels and their mapping to physical channelstransport channels and their mapping to physical channels dedicated transport channel the only dedicated transport channel is dedicated channel dch characterised by features of fast power control, fast data rate change on a framebyframe basis, soft handover and possible adaptive antenna. Umts overview david tipperdavid tipper associate professor graduate telecommunications and networking program university of pittsburgh 2700 slides 12 3g driving factors subscriber base continues to grow 1 billion wireless subscribers in 2002 surpassed landline telcom 2720 2 predict 3 billion by 2008 800 billion mobile revenues 2007.
1329 415 870 1372 527 1535 182 224 50 622 382 125 1620 41 882 786 482 852 864 1369 524 1058 922 1272 559 49 57 507 1096 1363 713 1277 342 532 653 532 1056