Third Generation Developments

RADIOCOMMUNICATIONSAGENCY

A presentation for the Mobile Services Committee

RA2/PTN Radiocommunications Agency

WARC-92 outcome

• At WARC-92 the following bands were identified on a wordwide basis for IMT-2000 applications:

IMT - 2000

IMT - 2000

MSS MSS

1900 2000 2100 2200

1885 1980 20102025 2110 2170 2200

UK spectrum allocations

1900 2000 2100 2200

1880 1980 2025 2110 2170 22001900

DEC

T MSS

MSSFDD Licensed

FDD Licensed

TD

D

Exem

pt

1920

TD

D

Lic

en

sed

2010

• The IMT-2000 spectrum identified at WARC-92 has been allocated in the UK as follows:

UK licences

• Following a spectrum auction in the spring of 2000 five UK UMTS licences were awarded as follows:– Hutchinson 3G- 2 x 15 MHz FDD + 5 MHz TDD– BT Cellnet - 2 x 10 MHz FDD + 5 MHz TDD– Vodafone - 2 x 15 MHz FDD– One2One - 2 x 10 MHz FDD + 5 MHz TDD– Orange - 2 x 10 MHz FDD + 5 MHz

TDD

IMT-2000 Terrestrial Radio Interfaces

• IMT-2000 CDMA Direct Spread (UTRA FDD)

• IMT-2000 CDMA Multi-Carrier (cdma 2000)

• IMT-2000 CDMA TDD (UTRA TDD)• IMT-2000 TDMA Single Carrier (UWC-

136)• IMT-2000 FDMA/TDMA (DECT)

WRC-2000 outcome

• Three additional frequency bands were identified for IMT-2000 applications as follows:– 806 - 960 MHz RR Footnote S5.317A– 1710 - 1885 MHz RR Footnote S5.384A– 2500 - 2590 MHz RR Footnote S5.384A

• WRC-2000 also maintained the status of the original WARC-92 IMT-2000 bands

Development post WRC-2000

• Three key Groups– Within Europe ERC PT1 has been charged with

developing the CEPT positions on spectrum packaging and related issues - e.g. global circulation

– Within the ITU-R Working Party 8F has responsibility within SG8 for IMT-2000 and systems beyond

– Standardisation• 3GPP• 3GPP2

ITU-R WP8F structure

• WP8F is organised into six working groups:– WG Spectrum– WG Radio Technology (M.1457)– WG Vision– WG Circulation (now closed)– WG Satellite Co-ordination– WG Developing IMT

ITU-R WP8F post WRC-2000

• WP8F continue to develop work on the preferred frequency options for both the WARC-92 and WRC-2000 bands

• The general approach has been to maintain flexibility and facilitate migration from 2G to 3G services by maintaining duplex directions and spacings as far as possible

Preferred frequency options1710 - 2200 MHz

1 700 2 200

1

1 920 1 980

2 110 2 170

190 MHz duplex separation

1 700 2 200

5

1 710 1 770

2 110 2 170

400 MHz duplex separation

1 700 2 200

3

1 850 1 910

1 930 1 990

80 MHz duplexseparation

1 700 2 200

2

1 710 1 7553 1 785

1 805 1 8503 1 880

95 MHz duplexseparation

1 700 2 200

4

1 755 [1 805]

2 110 [2 160]

355 MHz duplex separation

Preferred frequency options806 - 960 MHz Band

800 900

MHz806 960

800 900

MHzMStx BStx880 915 925 960

800 900

MHzMStx BStx894869849824

FrequencyArrangement A

FrequencyArrangement B

IMT-2000 Spectrum(Below 1GHz)

MStx = Mobile Transmit band BStx = Base Transmit Band

800 900

MHz806 960

800 900

MHz806 960

800 900

MHzMStx BStx880 915 925 960

800 900

MHz

800 900

MHzMStx BStx894869849824

FrequencyArrangement A

FrequencyArrangement B

IMT-2000 Spectrum(Below 1GHz)

MStx = Mobile Transmit band BStx = Base Transmit Band

Preferred frequency options2500 - 2690 MHz band

• The following three basic arrangements or combinations of them are expected to meet the demand for additional traffic; the aggregate asymmetry is as yet unknown but is assumed to be biased towards the downlink:– a) FDD Up- and Downlink operation– b) FDD Downlink operation– c) TDD operation

Generic principle for2500 - 2690 MHz band

Different scenarios in the band 2500-2690 MHz

Freq.block -> A B C D

Scenario 1 FDD UL TDD TDD FDD DL (internal)

Scenario 2 FDD UL FDD DL (external) FDD DL (external) FDD DL (internal)

Scenario 3 FDD DL (external) FDD DL (external) TDD TDD

Scenario 4 TDD TDD TDD TDD

Scenario 5 FDD DL (external) FDD DL (external) FDD DL (external) FDD DL (external)

It should be noted that the edges of sub-bands A and D may be influenced by the use of the bands 2500-2520 MHz and 2670-2690 MHz by the satellite component of IMT-2000 (resolves 2 of Resolution 225).

2500 MHz 2690 MHz

A B C D

Vision of systems beyondIMT-2000

denotes interconnection between systems via networks or the like, which allows flexible use in any environments without making users aware of constituent systems.

Mobility

Medium

BS digital Broadcasting

Terrestrial digital broadcasting

Communication speed ( Mbit/s )1

Nomadic / Local areawireless access

Low

IMT-2000

10 100

EnhancedIMT-2000

Systems beyond IMT-2000

Enhancement

New Elementsof Systems Beyond

Mobile Access

High

EU Mandate 4 to CEPT

• On 9 March 2000 the European Commission issued a mandate to CEPT to:– “… harmonise frequency usage in order to

facilitate a co-ordinated implementation in the community of third generation mobile and wireless communications systems operating in additional frequency bands as identified by the WRC-2000 for IMT-2000 systems.”

• Further mandates are expected at a later stage to establish the spectrum channelling arrangements for additional spectrum

Mandate deliverables

• Report from CEPT by November 2001 with initial proposals for:– amount of additional spectrum needed;– frequency bands to accommodate additional spectrum;– ‘reference date’ to make additional spectrum available– analysis of global roaming implications

• CEPT Report by November 2002– validation of initial proposals, confirmation of ‘reference date’

• CEPT Decision by March 2003– designation of additional spectrum to be used for IMT-2000 as

from ‘reference date’

PT1 response to EU Mandate

• The main conclusion from the executive summary to the initial report from CEPT are:– CEPT confirms the preferred band for additional

terrestrial spectrum is the 2500 - 2690 MHz band– the 2500 - 2690 MHz band should be made available

from 2008 within CEPT (though due to current uncertainty in real availability of services, flexibility should be maintained on the definition of this date.)

– channelling arrangements for the 2500 - 2690 MHz band should not be fixed until the 2004/2005 timeframe.

• Release 99– W-CDMA and TD-CDMA radio interfaces– circuit-switched data up to 64 kbit/s– packet-switched data up to 384 kbit/s– core network compatible with GSM Phase 2+ R99

• Release 4– enhancements beyond Release 99– 1.28 Mcps TDD– base station classification– FDD repeaters

3rd Generation Partnership Project

3rd Generation Partnership Project

• Current work– Corrections and clarifications for Release 99

and Release 4– High Speed Downlink Packet Access– IP Multimedia Subsystem

• First IMS elements to appear in Release 5• Further IMS elements in Release 6• Further studies ongoing beyond Release 6 (e.g.

IPv4/v6)