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UMTS vs LTE-Difference between UMTS and LTE

This page on UMTS vs LTE describes difference between UMTS and LTE systems. Both the systems are used for cellular mobile communications.

Specifications UMTS LTE
Full form Universal
Mobile
Telecommunications
System
Long Term
Evolution
Frequency Band(MHz) Refer
UMTS Frequency Bands
Refer
LTE Frequency Bands
Channel Bandwidth 5MHz, 10MHz
with 2 carrier
(HSDPA), 10MHz with
2 carrier(HSUPA)
, 20MHz with
4 carrier HSDPA
Supports
1.4MHz, 3MHz,
5MHz, 10MHz,
15MHz, 20MHz
Access scheme It supports
WCDMA
Supports OFDMA
in the downlink
SC-FDMA (in uplink)
Flat
Architecture
No,
includes RNC
Yes
Frequency
re-use
Re-use of 1 Re-use of 1
Soft Handover
Support
Yes for DCH
and HSUPA
No for HSDPA
No
Fast Power
Control Support
Yes, for DCH
and HSUPA
No for HSDPA
No, slower
power control used
for the uplink
Uplink Modulation QPSK, 16QAM for
HSUPA in
3GPP R7
QPSK, 16QAM, 64QAM
Downlink Modulation QPSK, 16QAM for
HSDPA in 3GPP R5
64QAM for HSDPA
in 3GPP R7
QPSK, 16QAM, 64QAM
Channel number UMTS Channel number
is referred
as UARFCN
LTE channel number
is referred
as EARFCN
Protocol Stack For UMTS Access
Stratum(AS)
and Non Access Stratum(NAS),
refer read UMTS protocol stack article
Composed of PHY, MAC, RLC,
PDCP, RRC,
read LTE protocol stack tutorial
Channel types Divided into
logical channels,
transport and
physical channels,
Refer UMTS Channels
Divided into
logical channels,
physical channels
and transport
channels, Refer LTE Channel types
Network Architecture Refer
UMTS network architecture
Refer
LTE tutorial for LTE network architecture with interfaces
Adaptive
modulation
yes for
HSDPA and HSUPA
yes
Hybrid
ARQ Support
No for DCH
Yes for HSDPA and HSUPA
Yes
BTS Scheduling No for DCH,
Yes for HSDPA and HSUPA
Yes
Neighbour Planning Yes No, if Automatic Neighbour
Relations(ANR) capability
is supported
Scrambling code planning Yes No
Physical layer cell
identity planning
No Yes
Cell search
procedure
Refer
WCDMA UE cell search procedure
Refer
LTE UE cell search procedure
MIMO
Support
Not supported
in the
uplink, Downlink MIMO:
2x2 for HSDPA in 3GPP R7
Not supported
in the
uplink, downlink MIMO:
2x2,4x4,LTE advanced supports 8x8,
multi user and cooperative MIMO
Peak Uplink
Throughput
23 Mbps(10MHz,
16QAM,coding rate-1)
85Mbps(20MHz,
64QAM,coding rate-1,
normal CP, 2 PUCCH RBs/slot)
Refer LTE throughput
Peak Downlink Throughput 86 Mbps
(10MHz, 64QAM,
2X2 MIMO, coding rate-1,
15 HS-PDSCH
codes/carrier)
325 Mbps
(20MHz channel,
64QAM, 4x4MIMO,
coding rate-1,
normal CP,
1PDCCH symbol/subframe)
Timers UMTS Timers LTE Timers
Measurements Refer WCDMA Measurements Refer LTE UE Measurements
and

UMTS LTE Tutorials

UMTS Tutorial
LTE tutorial

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wibro vs mobile wimax
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wimax vs lte

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