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IntroductionGPS and Assisted GPS

15Operating Manual 1171.5248.12 ─ 15

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3GPP FDD Performance Test Scenario#3 (3GPP 34.108 v.8.0.0, 3GPP 34.171 v.

7.0.1)

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3GPP2 Static Test Scenario (3GPP2 C.S0036-0 V1.0)

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3GPP2 Moving Test Scenario (3GPP2 C.S0036-0 V1.0)

The generic workflow is described in chapter 2.8.6, "Generating A-GPS Test Sig-

nal", on page 23.

2.5.3 Custom build scenarios

The option Assisted GPS (R&S-K65) is not limited to be used for A-GPS testing exclu-

sively. Despite the predefined scenarios, it is also possible to define any user-specific

test scenario.

For testing of stand-alone GPS receivers, the option Assisted GPS (R&S-K65) offers full

flexibility on the simulated satellites including definition of the satellite's orbit and the

complete navigation message.

The Localization mode "Auto SV Selection" can be used to get a reasonable GPS sce-

nario, changing to "Full Configuration" however enables the user to adjust the scenario

to his exact requirements. For example, a detailed configuration of the ionospheric model

for each satellite is possible.

The generic workflow is described in chapter 2.8.5, "Generating A-GPS Custom Build

Scenarios (Localization Mode Full Configuration)", on page 22.

2.5.4 Generation of assistance data

Besides generating the satellite signals for an A-GPS test scenario, the option Assisted

GPS (R&S-K65) is also able to provide all kinds of assistance data in line with the simu-

lated scenario which can be provided to the UE by a protocol tester, like e.g. R&S CMU/

CRTU family.

Certainly, this also applies to user-defined A-GPS test scenarios.

Refer to chapter 2.7.1, "Example of A-GPS Test Setup", on page 19 for an example of

the A-GPS setup. The generic workflow is described in chapter 2.8.7, "Generating Assis-

tance Data", on page 23.

2.5.5 Simulation of Moving Receivers

In addition to the possibility to generate a real GPS signal for a predefined or user-defined

static geographical location, it is also possible to simulate moving receivers (see chap-

ter 2.6, "Moving Scenarios", on page 16).

Enhancements of Option Assisted GPS (R&S-K65)

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Case K44 Spécifications Page 29