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the (90), and (56), speed (32), hsdpa (32), access (31), high (30), data (29), hspa (29), packet (28), mobile (24), 3gpp (21), for (19), mbit (18), family (17), edit (17), hsupa (16), #downlink (16), with (15), uplink (15), categories (14), qam (14), network (13), release (13), from (12), transmission (12), channel (12), evolved (12), rates (12), are (11), rate (11), wireless (10), umts (10), networks (10), qpsk (10), this (9), was (9), scheduled (9), maximum (9), table (8), wikipedia (8), broadband (8), telecommunications (8), internet (8), radio (8), equipment (8), lte (8), also (8), page (7), articles (7), wcdma (7), user (7), code (6), non (6), 2009 (6), wayback (6), links (6), communication (6), protocol (6), history (6), information (6), ieee (6), other (6), advanced (6), technology (6), modulation (6), dch (6), new (6), tti (6), commons (5), link (5), january (5), standards (5), telecommunication (5), cellular (5), division (5), time (5), media (5), charles (5), device (5), 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alk english read edit view history tools tools move to sidebar hide actions read edit view history general what links here related changes upload file permanent link page information cite this page get shortened url switch to legacy parser print export download as pdf printable version in other projects wikimedia commons wikidata item appearance move to sidebar hide from wikipedia the free encyclopedia redirected from high speed downlink packet access 3g mobile telecommunications protocols hspa icon on an android smartphone part of a series on the wireless network technologies analog 0g 1g 1 5g digital 2g 2 5g 2 75g 2 9g 3g 3 5g 3 75g 3 9g 3 95g 4g 4g 4 5g 4 5g 4 9g 5g 5 5g 6g mobile telecommunications v t e high speed packet access hspa 1 is an amalgamation of two mobile protocols high speed downlink packet access hsdpa and high speed uplink packet access hsupa that extends and improves the performance of existing 3g mobile telecommunication networks using the wcdma protocols a further improved 3gpp standard called evolved high speed packet access also known as hspa was released late in 2008 with subsequent worldwide adoption beginning in 2010 the newer standard allows bit rates to reach as high as 337 mbit s in the downlink and 34 mbit s in the uplink however these speeds are rarely achieved in practice 2 overview edit the first hspa specifications supported increased peak data rates of up to 14 mbit s in the downlink and 5 76 mbit s in the uplink they also reduced latency and provided up to five times more system capacity in the downlink and up to twice as much system capacity in the uplink compared with original wcdma protocol high speed downlink packet access hsdpa edit cellular network standards and generation timeline high speed downlink packet access hsdpa is an enhanced 3g third generation mobile communications protocol in the high speed packet access hspa family hsdpa is also known as 3 5g and 3g it allows networks based on the universal mobile telecommunications system umts to have higher data speeds and capacity hsdpa also decreases latency and therefore the round trip time for applications hsdpa was introduced in 3gpp release 5 it was accompanied by an improvement to the uplink that provided a new bearer of 384 kbit s the previous maximum bearer was 128 kbit s evolved high speed packet access hspa introduced in 3gpp release 7 further increased data rates by adding 64qam modulation mimo and dual carrier hsdpa operation under 3gpp release 11 even higher speeds of up to 337 5 mbit s were possible 3 the first phase of hsdpa was specified in 3gpp release 5 this phase introduced new basic functions and was aimed to achieve peak data rates of 14 0 mbit s with significantly reduced latency the improvement in speed and latency reduced the cost per bit and enhanced support for high performance packet data applications hsdpa is based on shared channel transmission and its key features are shared channel and multi code transmission higher order modulation short transmission time interval tti fast link adaptation and scheduling and fast hybrid automatic repeat request harq additional new features include the high speed downlink shared channels hs dsch quadrature phase shift keying 16 quadrature amplitude modulation and the high speed medium access protocol mac hs in base stations the upgrade to hsdpa is often just a software update for wcdma networks in hsdpa voice calls are usually prioritized over data transfer user equipment categories edit the following table is derived from table 5 1a of the release 11 of 3gpp ts 25 306 4 and shows maximum data rates of different device classes and by what combination of features they are achieved the per cell per stream data rate is limited by the maximum number of bits of an hs dsch transport block received within an hs dsch tti and the minimum inter tti interval the tti is 2 milliseconds so for example cat 10 can decode 27 952 bits 2 ms 13 976 mbit s and not 14 4 mbit s as often claimed incorrectly categories 1 4 and 11 have inter tti intervals of 2 or 3 which reduces the maximum data rate by that factor dual cell and mimo 2x2 each multiply the maximum data rate by 2 because multiple independent transport blocks are transmitted over different carriers or spatial streams respectively the data rates given in the table are rounded to one decimal point hsdpa user equipment ue categories category release max number of hs dsch codes per cell modulation note 1 mimo multi cell code rate at max data rate note 2 max downlink speed mbit s note 3 1 5 5 16 qam 76 1 2 2 5 5 16 qam 76 1 2 3 5 5 16 qam 76 1 8 4 5 5 16 qam 76 1 8 5 5 5 16 qam 76 3 6 6 5 5 16 qam 76 3 6 7 5 10 16 qam 75 7 2 8 5 10 16 qam 76 7 2 9 5 15 16 qam 70 10 1 10 5 15 16 qam 97 14 0 11 5 5 qpsk 76 0 9 12 5 5 qpsk 76 1 8 further ue categories were defined from 3ggp release 7 onwards as evolved hspa hspa and are listed in evolved hsdpa ue categories notes edit 16 qam implies qpsk support 64 qam implies 16 qam and qpsk support the maximal code rate is not limited a value close to 1 in this column indicates that the maximum data rate can be achieved only in ideal conditions the device is therefore connected directly to the transmitter to demonstrate these data rates the maximum data rates given in the table are physical layer data rates application layer data rate is approximately 85 of that due to the inclusion of ip headers overhead information etc adoption edit gprs speed in a hsdpa plan as of 28 august 2009 update 250 hsdpa networks had commercially launched mobile broadband services in 109 countries 169 hsdpa networks supported 3 6 mbit s peak downlink data throughput and a growing number delivered 21 mbit s peak data downlink citation needed cdma2000 evdo networks had the early lead on performance in particular japanese providers were highly successful benchmarks for this network standard however this later changed in favor of hsdpa as an increasing number of providers worldwide began adopting it in 2007 an increasing number of telcos worldwide began selling hsdpa usb modems to provide mobile broadband connections in addition the popularity of hsdpa landline replacement boxes grew these provided hsdpa for data via ethernet and wi fi as well as ports for connecting traditional landline telephones some were marketed with connection speeds of up to 7 2 mbit s 5 under ideal conditions however these services could be slower such as when in fringe coverage indoors high speed uplink packet access hsupa edit high speed uplink packet access hsupa is a 3g mobile telephony protocol in the hspa family it is specified and standardized in 3gpp release 6 to improve the uplink data rate to 5 76 mbit s extend capacity and reduce latency together with additional improvements this allows for new features such as voice over internet protocol voip uploading pictures and sending large e mail messages hsupa was the second major step in the umts evolution process it has since been superseded by newer technologies with higher transfer rates such as lte 150 mbit s for downlink and 50 mbit s for uplink and lte advanced maximum downlink rates of over 1 gbit s technology edit hsupa adds a new transport channel to wcdma called the enhanced dedicated channel e dch it also features several improvements similar to those of hsdpa including multi code transmission shorter transmission time interval enabling faster link adaptation fast scheduling and fast hybrid automatic repeat request harq with incremental redundancy making retransmissions more effective similar to hsdpa hsupa uses a packet scheduler but it operates on a request grant principle where the user equipment ue requests permission to send data and the scheduler decides when and how many ues will be allowed to do so a request for transmission contains data about the state of the transmission buffer and the queue at the ue and its available power margin however unlike hsdpa uplink transmissions are not orthogonal to each other in addition to this scheduled mode of transmission the standards allow a self initiated transmission mode from the ues denoted non scheduled the non scheduled mode can for example be used for voip services for which even the reduced tti and the node b based scheduler are unable to provide the necessary short delay time and constant bandwidth each mac d flow i e qos flow is configured to use either scheduled or non scheduled modes the ue adjusts the data rate for scheduled and non scheduled flows independently the maximum data rate of each non scheduled flow is configured at call setup and typically not frequently changed the power used by the scheduled flows is controlled dynamically by the node b through absolute grant consisting of an actual value and relative grant consisting of a single up down bit messages at the physical layer hsupa introduces the following new channels e agch absolute grant channel e rgch relative grant channel f dpch fractional dpch e hich e dch hybrid arq indicator channel e dpcch e dch dedicated physical control channel carries the control information associated with the e dch transport channel e dpdch e dch dedicated physical data channel carries the e dch transport channel user equipment categories edit the following table shows uplink speeds for the different categories of hsupa hsupa user equipment ue categories hsupa category release max uplink speed mbit s modulation 1 6 0 73 qpsk 2 6 1 46 qpsk 3 6 1 46 qpsk 4 6 2 93 qpsk 5 6 2 00 qpsk 6 6 5 76 qpsk further ue categories were defined from 3ggp release 7 onwards as evolved hspa hspa and are listed in evolved hsupa ue categories evolved high speed packet access hspa edit main article evolved high speed packet access evolved hspa also known as hspa evolution hspa is a wireless broadband standard defined in 3gpp release 7 of the wcdma specification it provides extensions to the existing hspa definitions and is therefore backward compatible all the way to the original release 99 wcdma network releases evolved hspa provides data rates between 42 2 and 56 mbit s in the downlink and 22 mbit s in the uplink per 5 mhz carrier with multiple input multiple output 2x2 mimo technologies and higher order modulation 64 qam with dual cell technology these can be doubled since 2011 hspa has been widely deployed among wcdma operators with nearly 200 commitments 6 see also edit broadband cellular router digrf v3 global mobile suppliers association internet access list of device bandwidths list of umts networks mobile broadband alliance multi band device dual band tri band quad band penta band umts frequency bands references edit nomor research white paper technology of high speed packet access archived january 23 2009 at the wayback machine nomor de universal mobile telecommunications system umts ue radio access capabilities pdf etsi january 2014 retrieved march 4 2014 hspa about us 3gpp ts 25 306 v11 0 0 http www 3gpp org ftp specs html info 25306 htm vodafone uk maintenance vodafone co uk dc hspa brings 42 mbps to 39 networks 3gpp retrieved july 8 2017 bibliography edit sauter martin 2006 communication systems for the mobile information society chichester john wiley isbn 0 470 02676 6 harri holma and antti toskala 2006 hsdpa hsupa for umts high speed radio access for mobile communications wiley isbn 0 470 01884 4 stuhlfauth reiner 2012 high speed packet access technology and measurement aspects of hsdpa and hsupa mobile radio systems munich isbn 978 3 939837 14 5 cite book cs1 maint location missing publisher link external links edit wikimedia commons has media related to high speed packet access 3gpp 3gpp specifications home page archived october 26 2008 at the wayback machine gsm association on hspa public hspa discussion forum 3 5g drivin ericsson com dual carrier hspa dc hspa dc hsdpa radio electronics com understand hsdpa s implementation challenges archived february 16 2010 at the wayback machine nomor research white paper technology of high speed packet access archived january 23 2009 at the wayback machine nomor 3gpp newsletter 2009 03 standardisation updates on hspa evolution archived february 1 2014 at the wayback machine v t e cellular network standards list of mobile phone generations 0g radio telephones 1946 mts imts altai olt mta mtb mtc mtd amts autotel palm arp b netz amr 1g 1979 amps family amps n amps tacs etacs other nmt c 450 hicap mobitex datatac ct1 rtmi 2g 1991 gsm 3gpp family gsm csd hscsd 3gpp2 family cdmaone is 95 amps family d amps is 54 and is 136 other cdpd iden pdc phs ct2 2g transitional 2 5g 2 75g 2 9g gsm 3gpp family gprs edge egprs evolved edge 3gpp2 family cdma2000 1x tia eia is 2000 cdma2000 1x advanced other widen dect 3g 1998 imt 2000 2001 3gpp family umts utra fdd w cdma foma utra tdd lcr td scdma utra tdd hcr td cdma 3gpp2 family cdma2000 1xev do release 0 tia is 856 3g transitional 3 5g 3 75g 3 9g 3gpp family hspa hsdpa hsupa hspa dc hsdpa lte e utra 3gpp2 family cdma2000 1xev do revision a tia eia is 856 a ev do revision b tia eia is 856 b ev do revision c ieee family mobile wimax ieee 802 16e flash ofdm iburst ieee 802 20 wibro etsi family hiperman 4g 2009 imt advanced 2013 3gpp family lte advanced e utra lte advanced pro 4 5g 4 9g ieee family wimax ieee 802 16m wimax 2 1 wibro 5g 2018 imt 2020 2021 3gpp family 5g nr 5g advanced 5 5g 5g redcap lte m nb iot other dect 2020 related articles cellular networks mobile telephony history comparison of standards channel access methods fdma ofdma tdma stdma ssma cdma sdma spectral efficiency comparison table frequency bands gsm umts lte 5g nr cdma mobile broadband multimedia broadcast multicast service ngmn alliance push to talk mimo ims volte vilte vonr vinr wi fi calling osmocom telecommunication portal telephones portal v t e internet access wired cable dial up docsis dsl ethernet fttx g hn nessum homeplug homepna ieee 1901 isdn moca pon power line broadband wireless pan bluetooth li fi wireless usb nearlink wireless lan wi fi wapi long range wireless 5g nr dect evdo gprs hspa iburst lte mmds muni wi fi satellite umts tdd wimax wibro v t e telecommunications history beacon broadcasting cable protection system cable tv communications satellite computer network data compression audio dct image video digital media internet video online video platform social media streaming drums edholm s law electrical telegraph fax heliographs hydraulic telegraph information age information revolution internet mass media mobile phone smartphone optical telecommunication optical telegraphy pager photophone prepaid mobile phone radio radiotelephone satellite communications semaphore phryctoria semiconductor device mosfet transistor smoke signals telecommunications history telautograph telegraphy teleprinter teletype telephone history the telephone cases television digital streaming undersea telegraph line videotelephony whistled language wireless revolution pioneers nasir ahmed edwin howard armstrong mohamed m atalla john logie baird ...