High-Speed Uplink Packet Access
Encyclopedia
High-Speed Uplink Packet Access (HSUPA) is a 3G
mobile telephony
protocol
in the HSPA family with up-link speeds up to 5.76 Mbit/s. The name HSUPA was created by Nokia
. The official 3GPP
name for 'HSUPA' is Enhanced Uplink (EUL).
The specifications for HSUPA are included in Universal Mobile Telecommunications System
Release 6 standard
published by 3GPP
.
– "The technical purpose of the Enhanced Uplink feature is to improve the performance of uplink dedicated transport channels, i.e. to increase capacity and throughput and reduce delay."
Similarly to HSDPA, HSUPA uses a packet scheduler, but it operates on a request-grant principle where the UE
s request a 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 also allows 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 will not be able to provide the very short delay time and constant bandwidth required.
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 changed frequently. 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 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) and E-DPDCH (E-DCH Dedicated Physical Data Channel).
E-DPDCH is used to carry the E-DCH Transport Channel; and E-DPCCH is used to carry the control information associated with the E-DCH.
is working on further advancing transfer rates. LTE provides up to 326.4 Mbit/s for downlink and 86.4 Mbit/s for uplink. Its evolution LTE Advanced
supports maximum downlink rates of over 1 Gbit/s.
3G
3G or 3rd generation mobile telecommunications is a generation of standards for mobile phones and mobile telecommunication services fulfilling the International Mobile Telecommunications-2000 specifications by the International Telecommunication Union...
mobile telephony
Mobile telephony
Mobile telephony is the provision of telephone services to phones which may move around freely rather than stay fixed in one location. Mobile phones connect to a terrestrial cellular network of base stations , whereas satellite phones connect to orbiting satellites...
protocol
Communications protocol
A communications protocol is a system of digital message formats and rules for exchanging those messages in or between computing systems and in telecommunications...
in the HSPA family with up-link speeds up to 5.76 Mbit/s. The name HSUPA was created by Nokia
Nokia
Nokia Corporation is a Finnish multinational communications corporation that is headquartered in Keilaniemi, Espoo, a city neighbouring Finland's capital Helsinki...
. The official 3GPP
3GPP
The 3rd Generation Partnership Project is a collaboration between groups of telecommunications associations, known as the Organizational Partners...
name for 'HSUPA' is Enhanced Uplink (EUL).
The specifications for HSUPA are included in Universal Mobile Telecommunications System
Universal Mobile Telecommunications System
Universal Mobile Telecommunications System is a third generation mobile cellular technology for networks based on the GSM standard. Developed by the 3GPP , UMTS is a component of the International Telecommunications Union IMT-2000 standard set and compares with the CDMA2000 standard set for...
Release 6 standard
Standardization
Standardization is the process of developing and implementing technical standards.The goals of standardization can be to help with independence of single suppliers , compatibility, interoperability, safety, repeatability, or quality....
published by 3GPP
3GPP
The 3rd Generation Partnership Project is a collaboration between groups of telecommunications associations, known as the Organizational Partners...
.
– "The technical purpose of the Enhanced Uplink feature is to improve the performance of uplink dedicated transport channels, i.e. to increase capacity and throughput and reduce delay."
Description
HSUPA uses an uplink enhanced dedicated channel (E-DCH) on which it employs link adaptation methods similar to those employed by High-Speed Downlink Packet Access HSDPA, namely:- shorter Transmission Time IntervalTransmission Time IntervalTTI, Transmission Time Interval, is a parameter in UMTS related to encapsulation of data from higher layers into frames for transmission on the radio link layer. TTI refers to the duration of a transmission on the radio link...
enabling faster link adaptationLink adaptationLink adaptation, or adaptive coding and modulation , is a term used in wireless communications to denote the matching of the modulation, coding and other signal and protocol parameters to the conditions on the radio link Link adaptation, or adaptive coding and modulation (ACM), is a term used in...
;
- HARQ (hybrid ARQARQAutomatic Repeat reQuest , also known as Automatic Repeat Query, is an error-control method for data transmission that uses acknowledgements and timeouts to achieve reliable data...
) with incremental redundancy making retransmissionsRetransmission (data networks)Retransmission, essentially identical with Automatic repeat request , is the resending of packets which have been either damaged or lost. It is a term that refers to one of the basic mechanisms used by protocols operating over a packet switched computer network to provide reliable communication...
more effective.
Similarly to HSDPA, HSUPA uses a packet scheduler, but it operates on a request-grant principle where the UE
UE (wireless telephone)
In the Universal Mobile Telecommunications System and 3GPP Long Term Evolution , user equipment is any device used directly by an end-user to communicate. It can be a hand-held telephone, a laptop computer equipped with a mobile broadband adapter, or any other device...
s request a 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 also allows 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 will not be able to provide the very short delay time and constant bandwidth required.
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 changed frequently. 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
Physical layer
The physical layer or layer 1 is the first and lowest layer in the seven-layer OSI model of computer networking. The implementation of this layer is often termed PHY....
, HSUPA introduces 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) and E-DPDCH (E-DCH Dedicated Physical Data Channel).
E-DPDCH is used to carry the E-DCH Transport Channel; and E-DPCCH is used to carry the control information associated with the E-DCH.
Versions
The following table gives uplink super speed for the different categories of HSUPA.| HSUPA Category | Max Uplink Speed | Examples |
|---|---|---|
| Category 1 | 0.73 Mbit/s | |
| Category 2 | 1.46 Mbit/s | |
| Category 3 | 1.46 Mbit/s | |
| Category 4 | 2.93 Mbit/s | Qualcomm 6290 |
| Category 5 | 2.00 Mbit/s | Nokia: X3-02, X3-01, N8, C7, C5, C3-01, E52 Nokia E52 The Nokia E52 is a smartphone from the Nokia Eseries range, a Symbian OS v9.3 device with a 240x320 screen. It is available in Black, Black Aluminum, Metal Grey aluminium, White Aluminium and Gold. It comes with a 1GB MicroSD memory card, but it supports MicroSD cards with up to 16GB memory. It... , E72, E55, 6700 Classic, N900, 5630 XpressMusic; BlackBerry: Storm 9500, 9530; HTC: Dream, Passion (Nexus One); Sony Ericsson C510 Sony Ericsson C510 The C510 is one of the mobile phones in Sony Ericsson's Cyber-shot series. Released on 7 January 2009, it was a successor to the K510i model.-Features:... , Sony Ericsson C903, Sony Ericsson W705, Sony Ericsson T715 , Samsung Wave , Samsung Wave II |
| Category 6 | 5.76 Mbit/s | Nokia CS-15, Option GlobeTrotter Express 441/442, Option iCON 505/505M, Samsung i8910, Apple iPhone 4, Huawei E180/E182E/E1820/E5832/EM770W, Micromax A60, ST-Ericsson M5730, Motorola Atrix 4G Motorola Atrix 4G The Motorola Atrix 4G is a high-end Android-based smartphone by Motorola, introduced in CES 2011 on January 5, 2011. It was made available in the first quarter of 2011. It was introduced along with three other products, Motorola Xoom, Motorola Droid Bionic, and Motorola Cliq 2. It uses an NVIDIA... (enabled by software update), Samsung Galaxy S 4G, Sony Ericsson W995 Sony Ericsson W995 The Sony Ericsson W995 is a candybar slider model music phone designed by Sony Ericsson as the new Walkman flagship phone, previously known as Hikaru. The W995 was released on 4 June 2009 and uses the 4th version of the 'Walkman Player'. It is also the first Walkman phone to feature a 3.5mm headset... |
| Category 7 (3GPP Rel7) | 11.5 Mbit/s | |
| Category 8 (3GPP Rel9) | 11.5 Mbit/s | 2 ms, dual cell E-DCH operation, QPSK only; see 3GPP Rel 9 TS 25.306 figure 5.1g |
| Category 9 (3GPP Rel9) | 23 Mbit/s | 2 ms, dual cell E-DCH operation, QPSK and 16QAM; see 3GPP Rel 9 TS 25.306 figure 5.1g |
Roadmap
After HSUPA the 3GPP3GPP
The 3rd Generation Partnership Project is a collaboration between groups of telecommunications associations, known as the Organizational Partners...
is working on further advancing transfer rates. LTE provides up to 326.4 Mbit/s for downlink and 86.4 Mbit/s for uplink. Its evolution LTE Advanced
LTE Advanced
LTE Advanced is a preliminary mobile communication standard, formally submitted as a candidate 4G system to ITU-T in late 2009, was approved into ITU, International Telecommunications Union, IMT-Advanced and expected to be finalized by 3GPP in early 2011...
supports maximum downlink rates of over 1 Gbit/s.