Dual / 1

Dual Cell

Dual / 2

1900 MHz/800 MHz Integration

1900

800

Dual / 3

TDMA/136- Merging of 800 & 1900 deployments

TDMA 800

TDMA 1900

TDMA 1900

Increase capacity

Increase coverage- new licenses enabling extended coverage

Full coverage from day one!- dual mode/dual band phones

Re-use of existing infrastructure

Better trunking efficiency

Dual / 4

TDMA/136- The dual-band standard

Dual-band/dual-mode terminal800 MHz AMPS/TDMA& 1900 TDMA

800 MHz AMPS/TDMA

1900 MHz TDMA

An example of how an operatorcan get nationwide coverageby merging 800 & 1900 MHzdeployments

Dual / 5

One System

800 1900MHz

1900MHz

800MHz800 1900MHz

MSC(ICMS8800)

Dual / 6

TCB

Infrastructure Reuse

MSC CRI

PSTN

ETC

EMRP

ANP

ATCC

Rx

ATC Tx

RTT TRX MC

ETB

STR

EMRPSNTSWGS

MTRAC

Dual / 7

RBS 884 Macro (1900MHz) 3X15 Maximum Up to 15 carriers

per cell City and Rural

applications

TCB a

TCB b

ANPC 1

TCB c

ATCC a

ATCC b

ANPC 2

ATCC c

ATCC a

ATCC b

CRI

ATCC c

TCB d

TCB e

TCB f

CRI POWD POWD

RBS 884 Macro Quad (1900MHz) 3X16 Maximum Up to 16 carriers

per cell Rural applications

TCB a

ATCC a

ANPC a

CRI

POWD

TCB a

ATCC a

TCB a

TCB a

TCB b

ATCC b

ANPC b

POWD

TCB b

ATCC b

TCB b

TCB b

TCB c

ATCC c

ANPC c

1/2 CRI

TCB c

ATCC c

TCB c

TCB c

Main

Prim

Prim

RBS 884 Micro (1900MHz) 3x4 Maximum Up to 12 carriers

per site City and in building

applications

Base Stations in 1900MHz Band

Dual / 8

RBS 884 Macro

City and rural sites Three power classes:

36 dBm 40 dBm 44 dBm

32 carriers/cell

RBS 884 Micro With MCPA

City and rural sites 36 dBm 24 carriers/cell

RBS 884 Pico

Indoor sites <20 dBm 4 carriers/cell

RBS 884 Micro Indoor sites 24 dBm 24 carriers/cell

POWD POWD

TCB

CRI ANPC 1

ANPC 2

TCB

TCB TCB

TCBTCB

TCB

TCB

ATCC 1

ATCC 1

ATCC 1

ATCC 2

ATCC 2

ATCC 2

TCB

TCB

TCB

CRI

Base Stations in 800MHz Band

Dual / 9

Better Trunking EfficiencyBetter Trunking Efficiency

Common trunking group means higher capacity.

Example:

20 + 20 Channels

One System: 30.1 Erlang @ 2% GOS

Separate Systems: 26.4 Erlang @ 2% GOS

=> 14% Higher Capacity with CMS8800.

Same coverage assumed

Dual / 10

1900

800

800

800

R1

0.7R1

Due to different propagation, 1900 MHz gives smaller radius at same output power.

Only when range is noise limited, i.e. rural sites. Urban sites is usually C/I limited

1900 and 800 Coverage Issues

Dual / 11

System Configuration

Use existing sites when possible

1900 1900

800

800

800

19001900

800

800

800

800

Either create hand-off zones (1900-800-1900) or Deploy new 1900 sites to over the inter-hyperband hand-off corridor

Dual / 12

MAHO-List

Cell A 850Cell B 1900Cell D 850Cell C 850

Hand Off

1900

850

Dual / 13

Hyperband Handoff Using the HCS Algorithm

850 layer

1900 layer

Preferred

Standard

NonPreferred

Dual / 14

Microcell 2 & 3: StandardMicrocells 4: Preferred

Sel. 1Sel. 1 Sel. 4Sel. 1Sel. 2

Macrocell 1

Microcell 4Microcell 3Microcell 2

SS-SUFF

HCS Macro Cell – Micro Cell Hand-Off

Dual / 15

Dual Cell Verification

When the 850 and 1900 are co-located

Ability to use the 850 MHz MVER to verify the 1900 Handoff

1900

8501900 850

MV

ER MV

ER

850 to 1900 Hand off

Dual / 16

Border Areas

When leaving the 1900 coverage area

1900 MVER is needed in the neighbor cell

Ability to use the 1900 MHz MVER to verify the 850 Handoff

1900

8501900 850

MV

ER MV

ER

1900

850

1900 850

MV

ER MV

ER

850 to 1900 Hand off

Dual / 17

800 MHz buffer zone with 1900 co-located sites

800 800

800

800

800

800

800

800

Border Issues

1900

1900

1900

Dual / 18

Using SSSUF in the Border Areas

850 layer

1900 layer

Standard

SSSUF= x dB SSSUF=x+10 dB

Dual / 19

Border Issue

It is recommended to have 1900 verification device (LVM) for 1900/800 handoff.

The 1900 LVM must have same coverage as the 800 cell.

1900

800

Only when range is noise limited, i.e. rural sites.

Urban sites is usually C/I limited.

1900 coverage for theverification device

Dual / 20

MSC(TDMA/136.A)

MSC(TDMA/136.0)

MSC(IS-54.B)

1900 MHz DTCACELP Codec

MSC(Other vendor

MSC with level of

functionality < TDMA/136.A)

MSC(TDMA/136.A)

1900MHz to 800MHz (Analog)800 MHz(ACELP) to 800 MHz (Analog)800 MHz (Analog) to 800 MHz (A/D)800 MHz (VSELP) to 800 MHz (A/D)

1900 MHz to 1900 MHz1900MHz to 800MHz (A/D)800 MHz(ACELP) to 800 MHz (A/D)800 MHz (Analog) to 800 MHz (A/D)800 MHz (VSELP) to 800 MHz (A/D)

IS-41.C or lower/MTUP

IS-41.C + TSB76 (PCS Multi-Band Support)

Network Support

Dual / 21

1900 MHz systems take full advantage of the functionality provided

by TDMA/136.A and thereby are fully integrated to their the 800 MHz

counterpart

Bi-directional Inter-Hyperband Handoff

Bi-directional Inter-Hyperband Directed Retry

Multi Hyperband Capable Best Server Selection support

Network inter-operability is fully supported by IS-41.C + TSB76

Inter-system Inter-Hyperband Handoff

Full roaming support

Ericsson supports dual band-dual mode systems as of Release C.

Standard Support

Dual / 22

Conclusions

1900 MHz systems can be deployed based on existing infrastructure

Same functionality is offered on both 1900 MHz and 800 MHz hyperbands which allows for both capacity driven and service driven deployment

Level of integration depends on customer commercial strategy

Considerations might be taken when inter-operating towards ‘other vendor’ systems which level of functionality is not compatible with PCS systems