Is Hsupa a 3G?

High-Speed Uplink Packet Access (HSUPA) is a 3G mobile telephony protocol in the HSPA family. This technology was the second major step in the UMTS evolution process. It was specified and standardized in 3GPP Release 6 to improve the uplink data rate to 5.76 Mbit/s, extending the capacity, and reducing latency.

What is HSDPA mobile network?

HSDPA (High-Speed Downlink Packet Access) is a packet-based mobile telephony protocol used in 3G UMTS radio networks to increase data capacity and speed up transfer rates.

What is the difference between HSPA and HSDPA?

HSPA refers to the combination of high-speed downlink packet access (HSDPA) and high-speed uplink packet access (HSUPA). HSDPA allows data rates up to 14.4 Mbit/s in the downlink. HSPA also boosts capacity in UMTS networks and provides significant latency reductions.

Which modulation scheme is used in HSDPA?

Modulation: One of the keys to the operation of HSDPA is the use of an additional form of modulation. Originally W-CDMA had used only QPSK as the modulation scheme, however under the new system16-QAM which can carry a higher data rate, but is less resilient to noise is also used when the link is sufficiently robust.

Is HSDPA a 4G?

HSDPA is sometimes called 3.5G. HSPA+ is an evolution HSPA(HSDPA&HSUPA). It is a 4G technology that allows download at a rate of up to 168Mbps.

What is HSDPA throughput?

This appendix provides a brief introduction to high speed downlink packet access (HSDPA) as the expanded throughput solution for UMTS networks in 3GPP release 5. Known as HSUPA (high speed uplink packet access), this 3GPP release 6 feature promises throughputs of up to 5.4 Mbps in the uplink.

Is LTE 5G?

LTE stands for Long Term Evolution, and is associated with the 4G and 5G wireless communications standard designed to provide higher speeds than the 3G networks for mobile devices, such as smartphones, tablets, and wireless hotspots. It is a service only provided over 4G and 5G LTE devices that are compatible to VoLTE.

What is the difference between HS-dpsch and HS-SCCH in HSDPA?

E-DPDCH and E-DPCCH are dedicated channels whereas HS-DPSCH and HS-SCCH are shared channel, but this is understandable because in HSDPA case the source and target of the data transmission is one-to-many but in HSUPA case the source and target is one-to-one, so it is understandable to use dedicated channels in HSUPA.

What is the difference between HSDPA and enhanced ul (Enhanced Dedicated Channel)?

In HSDPA the data to different UEs is carried on a shared channel, while in Enhanced UL the data from different users will be carried on a dedicated channel; transport channel Enhanced Dedicated Channel (E-DCH) mapped onto the physical channel E-DCH-Dedicated Physical Data Channel (E-DPDCH) – for high data rates more than one E-DPDCH will be used.

What does E-DPDCH stand for?

E-DPDCH (Enhanced Dedicated Physical Data Channel): This HSUPA uplink channel carries uplink user data. Each UE can transmit up to four E-DPDCH channels at a spreading factor of SF256 to SF2. The number of E-DPDCHs s and their spreading factors are varied according to the instantaneous data rate required.

Why do we need new channels for HSDPA?

The improved performance in terms of data rate, latency and overall operation provided by HSDPA required new data channels. The new HSUPA channels were required to carry the data but in addition to this channels were needed to provide control and signalling.