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link page information cite this page get shortened url switch to legacy parser print export download as pdf printable version in other projects wikidata item appearance move to sidebar hide from wikipedia the free encyclopedia redirected from evolved hspa enhanced 3g mobile telecommunications standard this article needs more citations please help improve this article by adding citations to reliable sources unsourced material may be challenged and removed find sources evolved high speed packet access news newspapers books scholar jstor april 2024 learn how and when to remove this message 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 hspa indicator in a samsung galaxy smartphone an hspa indicator in the notification bar of an android smartphone evolved high speed packet access better known as hspa hspa plus or hspap is a technical standard for wireless broadband telecommunication it is an evolution of the earlier hspa standard the 3rd generation partnership project 3gpp a mobile telecommunications standards organization specified hspa in its release 7 and later versions hspa provides higher data rates than the original hspa with theoretical speeds of up to 42 2 mbit s on the downlink 1 hspa is considered an evolution of 3g technology sometimes denoted as 3 75g it allows an upgrade to existing 3g networks to provide speeds closer to newer 4g networks without requiring a completely new radio interface for this reason hspa should not be confused with long term evolution lte a true 4g technology which uses a different air interface based on ofdma and follows a separate technological evolution path 2 to achieve higher data rates hspa introduces advanced antenna technologies like beamforming and multiple input multiple output mimo beamforming is a signal processing technique that focuses the wireless signal from a base station towards a specific receiving device rather than spreading it in all directions this signal concentration results in better reception and improved data speeds mimo increases throughput by using multiple antennas on both the transmitting base station and receiving user s device ends to send and receive multiple data streams at once further releases of the standard introduced dual carrier operation which allows a device to communicate over two separate 5 mhz frequency bands simultaneously effectively doubling the bandwidth advanced hspa is a further evolution that provides theoretical peak download speeds up to 168 mbit s and upload speeds up to 22 mbit s this performance is achieved through techniques like using a more complex modulation method such as 64 qam which encodes more data into each transmission or by combining multiple radio carriers with features like dual cell hsdpa downlink edit cellular network standards and generation timeline the downlink refers to the connection from the cellular network to the user s device hspa improves downlink speeds through several key technologies evolved hsdpa hspa edit an evolved hsdpa network can achieve theoretical maximum speeds of 28 mbit s and 42 mbit s using a single 5 mhz carrier these speeds are made possible by combining mimo in release 7 with a more efficient modulation scheme 64 qam in release 8 this combination improves throughput especially for users with good signal conditions quality of service can also be improved for users with poorer reception through techniques like diversity and joint scheduling 3 dual carrier hsdpa dc hsdpa edit dual carrier hsdpa also known as dual cell hsdpa is part of 3gpp release 8 it allows a mobile device to receive data from two 5 mhz carriers simultaneously by aggregating the bandwidth of two carriers for a total of 10 mhz dc hsdpa can double the potential data rate compared to a single carrier connection this achieves better resource utilization and spectrum efficiency through joint resource allocation and load balancing across the downlink carriers 4 new user equipment categories 21 24 were introduced to support dc hsdpa enabling theoretical speeds of up to 42 2 mbit s without relying on mimo technology later releases allow for even greater speeds release 9 allows the combined carriers to be in different frequency bands it also allows dc hsdpa to be used in combination with mimo on both carriers pushing theoretical speeds to 84 4 mbit s 5 6 releases from 10 onwards allow for the aggregation of up to four carriers user equipment ue categories edit the following table derived from table 5 1a of 3gpp ts 25 306 release 11 shows the maximum data rates of different device classes and the combination of features used to achieve them 7 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 ms for example a category 10 device can decode 27 952 bits every 2 ms resulting in a data rate of 13 976 mbit s not 14 4 mbit s as is often claimed 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 they transmit multiple independent transport blocks over different carriers or spatial streams respectively the data rates in the table are rounded to one decimal place evolved 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 13 7 15 64 qam 82 17 6 14 7 15 64 qam 98 21 1 15 7 15 16 qam mimo 2x2 81 23 4 16 7 15 16 qam mimo 2x2 97 28 0 17 7 15 64 qam 82 17 6 15 16 qam mimo 2x2 81 23 4 18 7 15 64 qam 98 21 1 15 16 qam mimo 2x2 97 28 0 19 8 note 4 15 64 qam mimo 2x2 82 35 3 20 8 note 5 15 64 qam mimo 2x2 98 42 2 21 8 15 16 qam dual cell 81 23 4 22 8 15 16 qam dual cell 97 28 0 23 8 15 64 qam dual cell 82 35 3 24 8 15 64 qam dual cell 98 42 2 25 9 15 16 qam dual cell mimo 2x2 81 46 7 26 9 15 16 qam dual cell mimo 2x2 97 55 9 27 9 15 64 qam dual cell mimo 2x2 82 70 6 28 9 15 64 qam dual cell mimo 2x2 98 84 4 29 10 15 64 qam triple cell 98 63 3 30 10 15 64 qam triple cell mimo 2x2 98 126 6 31 10 15 64 qam quad cell 98 84 4 32 10 15 64 qam quad cell mimo 2x2 98 168 8 33 11 15 64 qam hexa cell 98 126 6 34 11 15 64 qam hexa cell mimo 2x2 98 253 2 35 11 15 64 qam octa cell 98 168 8 36 11 15 64 qam octa cell mimo 2x2 98 337 5 37 11 15 64 qam dual cell mimo 4x4 98 168 8 38 11 15 64 qam quad cell mimo 4x4 98 337 5 notes 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 category 19 was specified in release 7 as for further use not until release 8 were the simultaneous use of 64qam and mimo allowed to obtain the specified max data rate category 20 was specified in release 7 as for further use not until release 8 were the simultaneous use of 64qam and mimo allowed to obtain the specified max data rate uplink edit the uplink refers to the connection from the user s device to the cellular network dual carrier hsupa dc hsupa edit dual carrier hsupa also known as dual cell hsupa is the uplink equivalent of dc hsdpa and was defined in 3gpp umts release 9 dc hsupa improves uplink performance by allowing the device to transmit on two adjacent 5 mhz carriers simultaneously this carrier aggregation in the uplink allows for more efficient use of spectrum and resources through joint scheduling and load balancing across the carriers leading to higher upload speeds 8 the standardization of release 9 was completed in december 2009 9 10 11 user equipment ue categories edit the following table shows uplink speeds for the different categories of evolved hsupa evolved hsupa user equipment ue categories hsupa category release max uplink speed mbit s modulation 7 7 11 5 qpsk 16qam 8 9 11 5 2 ms dual cell e dch operation qpsk only see 3gpp rel 11 ts 25 306 table 5 1g 9 9 22 9 2 ms dual cell e dch operation qpsk and 16qam see 3gpp rel 11 ts 25 306 table 5 1g 10 11 17 25 2 ms qpsk 16qam and 64qam see 3gpp rel 11 ts 25 306 table 5 1g 11 11 22 9 2 ms uplink mimo qpsk and 16qam see 3gpp rel 11 ts 25 306 table 5 1g 12 11 34 5 2 ms uplink mimo qpsk 16qam and 64qam see 3gpp rel 11 ts 25 306 table 5 1g multi carrier hspa mc hspa edit the aggregation of more than two carriers has been standardized in later 3gpp releases release 11 finalized in q3 2012 specifies 8 carrier hspa aggregating eight 5 mhz carriers allowed in non contiguous bands when combined with 4 4 mimo this offers theoretical peak transfer rates up to 672 mbit s the speeds mentioned such as 168 mbit s represent theoretical peaks the actual speed experienced by a user will be lower and depends on many factors including radio conditions hspa typically offers its highest bitrates only in very good radio conditions i e very close to the cell tower or when the user s device and the network both support either mimo or multi carrier operation which use different technical methods to create parallel data channels 12 13 all ip architecture edit an optional network design for hspa is the flattened all ip architecture this design simplifies the network and reduces latency by streamlining the path that user data travels in this architecture the base stations node b connect to the core network via the ip using modern cost effective link technologies like xdsl or ethernet specifically the user s data traffic flows directly from the base station to the gateway gprs support node ggsn which is the gateway to external packet data networks like the internet this bypasses the radio network controller rnc and the serving gprs support node sgsn that were part of the original umts architecture this simplification reduces equipment costs for operators and lowers the latency of data connections the definition can be found in 3gpp technical report tr25 999 while the data path the user plane is flattened the control plane which handles functions like connection management remains unchanged nokia siemens networks internet hspa i hspa was the first commercial solution to implement the evolved hspa flattened all ip architecture 14 see also edit comparison of wireless data standards high speed packet access list of umts networks references edit hspa about us archived from the original on 2017 07 09 retrieved 2016 03 30 ericsson review 1 2009 continued hspa evolution of mobile broadband pdf ericsson com 27 january 2009 archived from the original pdf on 5 june 2014 retrieved 2014 06 01 r1 081546 initial multi carrier hspa performance evaluation ericsson 3gpp tsg ran wg1 52bis april 2008 dual cell hspa and its future evolution nomor research nomor 2010 10 10 archived from the original on 2014 02 01 retrieved 2016 03 30 2009 03 standardisation updates on hspa evolution nomor research nomor 2010 10 10 archived from the original on 2014 02 01 retrieved 2016 03 30 dual carrier hspa dc hspa dc hspda archived from the original on 2018 11 20 retrieved 2016 03 14 3gpp ts 25 306 v11 0 0 http www 3gpp org ftp specs html info 25306 htm nomor 3gpp newsletter 2009 03 standardisation updates on hspa evolution archived from the original on 2014 02 01 retrieved 2016 03 14 3gpp releases nomor 3gpp newsletter 2009 03 standardisation updates on hspa evolution archived 2014 02 01 at the wayback machine nomor de nomor research white paper dual cell hsdpa and its evolution archived from the original on 2014 02 01 retrieved 2016 03 14 klas johansson johan bergman dirk gerstenberger mats blomgren anders wallén 28 january 2009 multi carrier hspa evolution pdf ericsson com archived from the original pdf on 26 may 2013 retrieved 2014 06 01 white paper long term hspa evolution mobile broadband evolution beyond 3gpp release 10 pdf nokiaslemensnetworks com 14 december 2010 archived from the original pdf on 2012 03 18 retrieved 2014 06 01 archived january 2 2011 at the wayback machine external links edit 3gpp specifications home page etsi gsm umts 3gpp numbering cross reference 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 retrieved from https en wikipedia org w index php title evolved_high_speed_packet_access oldid 1369263446 categories 3gpp standards umts hidden categories articles with short description short description is different from wikidata articles needing additional references from april 2024 all articles needing additional references webarchive template wayback links year of introduction missing this page was last edited on 13 august 2026 at 22 25 utc page was rendered with parsoid text is available under the creative commons attribution sharealike 4 0 license additional terms may apply by using this site you agree to the terms of use and privacy policy wikipedia is a registered trademark of the wikimedia foundation inc a non profit organization privacy policy about wikipedia disclaimers contact wikipedia legal safety contacts code of conduct developers 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