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IntroductionGPS and Assisted GPS

17Operating Manual 1171.5248.12 ─ 15

Command Description

ARC: E, N, Angle Specifies a 2-Dimensional ARC (East, North) with the first two arguments

representing the center of the ARC (m) in the Cartesian basis. The last

argument specifies the angle in degrees (°) of the Arc Starting the "cur-

rent location". Angle sign is significant since it indicates positive direction

(against clock movement) or negative direction (same as clock move-

ment). The end edge of the arc represents the new "current location".

Velocity doesn't change when using an ARC command.

LINE: ∆E, ∆N, Acceleration Specifies a 2-Dimensional Line starting the "current location" as the first

edge and (Current loc E + ∆E, Current loc N + ∆N) as the second edge

(m). Constant acceleration/deceleration can be specified in the last argu-

ment e.g., (0 means constant velocity). Unit for acceleration is (m/s2).

The second edge is again used as the "current location" for the next

command. The speed at this second edge is also used as the start speed

for the next command.

STAY: Time Stay at the current location for Time period (ms).

2.6.2 Example of Waypoint File

This example explains a waypoint file in the second format for the case of 3GPP Per-

formance Test Scenario#3 "Melbourne", as described in 3GPP 34.108 v.8.0.0, 3GPP

34.171 v.7.0.1.

The GPS signals simulate the GPS-receiver moving on a rectangular trajectory of 940m

by 1 440m with rounded corners defined in figure 2-1 and table 2-2.

The initial reference is first defined followed by acceleration to final speed of 100 km/h in

250 m.

The UE then maintains the speed for 400 m. This is followed by deceleration to final speed

of 25 km/h in 250 m. The UE then turn 90 degrees with turning radius of 20 m at 25 km/

h. This is followed by acceleration to final speed of 100 km/h in 250 m.

The sequence is repeated to complete the rectangle.

Table 2-2: Trajectory Parameters for Moving Scenario and Periodic Update Performance test case

Parameter Distance (m) Speed (km/h)

, l

20 25

, l

250 25 to 100 and 100 to 25

400 100

900 100

Moving Scenarios

1 2 ... 26 27 28 29 30 31 32 33 34 35 36 ... 164 165

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Case K44 Spécifications Page 31