LTE Technology PHY

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WCDMA WCDMA
3GPP = 3rd Generation Partnership Project WCDMA = Wideband Code Division Multiple Access HSDPA = High Speed Downlink Packet Access HSUPA = High Speed Uplink Packet Access HSPA = High Speed Packet Access LTE = Long Term Evolution
CG June 08
5
Current 3GPP Work and Study Items
WCDMA/HSPA-centric
LTE-centric
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Combination of 64QAM and MIMO Improved L2 for uplink Enhanced uplink for CELL_FACH state Enhanced UE DRX for FDD CS voice service over HSPA (completed) HSPA VoIP to WCDMA/GSM CS continuity HS-DSCH serving cell change enhancements Support of UTRA home Node B 64QAM, Enhanced CELL_FACH state, MIMO, and CPC for 1.28 Mcps TDD HSPA Study on Dual Cell HSDPA operation
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LTE standardization status Core specifications
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Physical Layer Specifications: l Physical layer work officially considered closed in 3GPP l Still many change requests with corrections to specifications Layer 2/3 Radio Protocol Specifications (MAC, RLC, PDCP, RRC): l RAN2 specifications reached 80% completion level at RAN#39 (Mar’08) l On track for 100% completion of all specs by RAN#41 (Sep'08) incl. early version of RRC ASN.1 (to be frozen latest in Dec'08) RF Performance Specifications for UE/BS: l Work ongoing on transmitter and receiver requirements System Architecture Evolution (SAE), Non-access stratum (NAS) signalling: l SAE stage 2 concepts frozen with some exceptions in June 2008 l SAE stage 3 expected to be completed by December 2008 MBMS largely moved to release 9
UMTS Long Term Evolution Technology Introduction
Contents
l Overview UMTS evolution and 3GPP standardization update:
WCDMA, HSPA, HSPA+, LTE, LTE-advanced
HSDPA/ HSUPA
HSPA+
LTE and HSPA+
LTEadvanced
3GPP release App. year of network rollout Downlink data rate Uplink data rate Round Trip Time
3GPP Release 99/4 2003/4
Long Term 源自文库volution (LTE), incl. interworking with GSM/EDGE, WCDMA/HSPA, and CDMA2000® 1xRTT/EV-DO
Study Item on LTE-Advanced
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Work items on support of WiMAX-LTE / WiMAX-UMTS mobility not yet agreed
l TS 36.133 Requirements for support of radio resource management (RRM)
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LTE standardization status Test specifications
l 3GPP will provide LTE FDD and TDD conformance tests for l RF l Radio Resource Management (RRM) l Signalling conformance tests. l LTE test specifications completion target is December 2008 l List of LTE signalling test cases available l Based on essential functionalities that are time critical for LTE introduction and expected from first LTE handsets l Definition of test case batches with different priority
14 Mbps (peak)
28 Mbps (peak) HSPA+: 42 Mbps (peak) 28 Mbps (peak) 11 Mbps (peak) HSPA+: 11 Mbps (peak) 11 Mbps (peak)
LTE: 75 Mbps (peak)
LTE: 150 Mbps* (peak)
l Introduction to LTE technology: l Physical layer concepts: OFDMA, SC-FDMA, MIMO l LTE radio procotol architecture l LTE/SAE network architecture l Test and measurement challenges for LTE l LTE RF testing for base stations and handsets l MIMO l LTE protocol testing for handsets l LTE conformance testing l Demo
TD-SCDMA HSDPA
3GPP = 3rd Generation Partnership Project HSDPA = High Speed Downlink Packet Access HSUPA = High Speed Uplink Packet Access HSPA = High Speed Packet Access LTE = Long Term Evolution
3GPP Release 5/6 2005/6 (HSDPA) 2007/8 (HSUPA)
3GPP Release 7 2008/2009
3GPP Release 8 2010
3GPP Study Item initiated
384 kbps(typ.) (typ.) 384 kbps 128 (typ.) 128 kbps kbps (typ.)
TS 36.213 E-UTRA; Physical layer procedures TS 36.214 E-UTRA; Physical layer; Measurements
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3GPP LTE Radio Protocol Specifications
l TS 36.300 E-UTRA and E-UTRAN; Overall description; Stage 2 l TS 36.302 Services provided by the physical layer l TS 36.304 UE procedures in idle mode l TS 36.306 UE radio access capabilities l TS 36.321 MAC protocol specification l TS 36.322 RLC protocol specification l TS 36.323 PDCP protocol specification
2.8 Mbps (peak)*
LTE:100 Mbps(req.)
128 kbps (typ.)
128 kbps (typ.)
2.2 Mbs (peak)*
LTE: 50 Mbps (req.)
* Higher data rate with the use of multi carrier possible
l Good progress on LTE RF test cases, i.e. TX and RX tests in TS 36.521.
CG June 08
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LTE Standardization Status
l TS 36.331 RRC specification
CG June 08
9
3GPP LTE Performance Specifications
l TS 36.101 User Equipment (UE) radio transmission and reception
l TS 36.104 Base Station (BS) radio transmission and reception
100 Mbps high mobility 1 Gbps low mobility
5.7 Mbps (peak)
~ 150 ms
< 100 ms
< 50 ms
LTE: ~10 ms
*based on 2x2 MIMO and 20 MHz operation
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Introduction to UMTS LTE Overview TD-SCDMA evolution
CG June 08
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Overview UMTS evolution, 3GPP standardization update: WCDMA, HSPA, HSPA+, LTE, LTE-advanced
CG June 08
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Introduction to UMTS LTE Overview 3GPP UMTS evolution
HSUPA
TD-LTE HSPA+
3GPP release
3GPP Release 4
3GPP Release 5
3GPP Release 7
3GPP Release 8
Downlink data rate Uplink data rate
384/128 kbps (typ.)
2.8 Mbps (peak)
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3GPP LTE Physical Layer Specifications
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TS 36.201 E-UTRA; Physical layer; General description
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TS 36.211 E-UTRA; Physical Channels and Modulation TS 36.212 E-UTRA; Multiplexing and channel coding
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