8 MBS information
37.571-53GPPPart 5: Test scenarios and assistance dataRelease 16TSUser Equipment (UE) conformance specification for UE positioning
8.1 Scenario for MBS signalling tests
8.1.1 Introduction
This clause defines the Metropolitan Beacon System (MBS) scenario that shall be used where required for E-UTRA and NR MBS signalling tests defined in TS 37.571-2 [7] clauses 7 and 9.
The beacon simulator shall generate all the UE supported MBS beacon signals defined in subclause 8.1.2.
The MBS sub-test case is identified by a Sub-Test Case Number 12 for Rel-13 only and Sub-Test Case Number 16 for Rel-14 onwards as defined in Table 8.1.1-1.
Table 8.1.1-1: Sub-Test Case Number Definition for TS 37.571-2 clauses 7 and 9
|
Sub-Test Case Number |
Supported Positioning Method |
|
12 |
UE supporting MBS (Rel-13 only) |
|
16 |
UE supporting MBS (Rel-14 onwards) |
|
NOTE: Metropolitan Beacon System (MBS) is a specific type of Terrestrial Beacon System (TBS) [21] |
|
8.1.2 MBS Signalling Scenario
The following MBS scenario shall be used:
– Simulated UE location for Rel-13 only: not applicable, for Rel-14 onwards: Latitude: 37.787528º, Longitude: -122.40337 13º, Altitude: 13 m
– The levels of the simulated beacons shall all be at the power levels shown in Table 8.1.2-1 +/- 6dB
Table 8.1.2-1: General test parameters for the beacons to be simulated for TS 37.571-2 clauses 7 and 9
|
Parameter |
Unit |
Value |
Comment |
|
Number of Beacons |
4 |
Beacons 1 to 4. Transmitted in the first four consecutive beacon slots in the MBS beacon transmission period. Other slots contain no simulated beacons. |
|
|
Centre Frequency |
MHz |
925.977 |
|
|
RF Channel |
AWGN |
||
|
MBS Beacon Configuration |
TB1 (2 MHz) |
For details see [21] |
|
|
MBS Packet Type |
Type 2 |
For details see [21] |
|
|
Beacon PN Code |
Integer |
Chosen for each beacon from the PN code list for TB1 |
Each of the 4 beacons uses a different PN code. For details see [21] |
|
Transmit power |
dBm |
-90 |
Table 8.1.2-2: MBS Beacon Payload fields and code phase delay for the beacons to be simulated for TS 37.571-2 clauses 7 and 9
|
Beacon |
MBS Tx ID [21] |
Slot Index [21] |
All Other fields [21] |
Code phase delay (ms) |
|
1 |
Equal to Slot number |
Equal to Slot number |
min value (bit_value = 0) |
0 |
|
2 |
Equal to Slot number |
Equal to Slot number |
min value (bit_value = 0) |
0 |
|
3 |
Equal to Slot number |
Equal to Slot number |
min value (bit_value = 0) |
0 |
|
4 |
Equal to Slot number |
Equal to Slot number |
min value (bit_value = 0) |
0 |
|
Note: bit_value is the conversion of the binary number represented by the corresponding bits in the payload to decimal. |
||||
8.2 Scenario for MBS performance tests
The Metropolitan Beacon System (MBS) scenario that shall be used for E-UTRA and NR MBS performance tests is defined in TS 37.571-1 [6] clause 11.
8.3 MBS Assistance Data (Release 14 onwards)
8.3.1 Introduction
This subclause defines the Metropolitan Beacon System (MBS) Assistance Data that shall be used where required for the MBS measurement tests defined in TS 37.571-1 [6] clause 11 and E-UTRA and NR MBS signalling tests defined in TS 37.571-2 [7] clauses 7 and 9.
8.3.2 MBS Almanac Assistance Data for signalling tests
MBS almanac assistance data is used in the MBS UE-based signalling tests as indicated in TS 37.571-2 [7]. The following fields shall be included in the MBS almanac assistance data (MBS-AlmanacAssistance-r14).
Table 8.3.2-1: MBS-AlmanacAssistance-r14 values
|
Information Element |
Units |
Value/remark |
Release |
|
transmitterID-r14 |
Integer |
Any value 0 to 32777 |
Rel-14 onwards |
|
transmitterLatitude-r14 |
degrees |
See Table 8.3.2-2 |
Rel-14 onwards |
|
transmitterLongitude-r14 |
degrees |
See Table 8.3.2-2 |
Rel-14 onwards |
|
transmitterAltitude-r14 |
meters |
See Table 8.3.2-2 |
Rel-14 onwards |
|
timeCorrection-r14 |
ns |
See Table 8.3.2-2 |
Rel-14 onwards |
Table 8.3.2-2: MBS-AlmanacAssistance-r14 beacon details
|
Beacon number |
Latitude |
Longitude |
Altitude |
Time Correction |
|
Beacon 1 |
37.78670 |
-122.40324 |
92.22 |
0 |
|
Beacon 2 |
37.79132 |
-122.39822 |
130.79 |
0 |
|
Beacon 3 |
37.78915 |
-122.40676 |
52.49 |
0 |
|
Beacon 4 |
37.78554 |
-122.39800 |
66.70 |
0 |
8.3.3 MBS Acquisition Assistance Data for signalling and measurement tests
MBS acquisition assistance data is used in the MBS signalling tests as indicated in TS 37.571-2 [7] clauses 7 and 9 and the MBS measurement tests as indicated in TS 37.571-1 [6] clause 11. The following fields shall be included in the MBS acquisition assistance data (MBS-AcquisitionAssistance-r14).
Table 8.3.3-1: MBS-AcquisitionAssistance-r14 values
|
Information Element |
Units |
Value/remark |
Release |
|
transmitterID-r14 |
Integer |
Any value 0 to 32777 |
Rel-14 onwards |
|
mbsConfiguration-r14 |
tb1 for TB1 beacon parameters and tb2 for TB2 beacon parameters |
Rel-14 onwards |
|
|
pnCodeIndex-r14 |
Integer |
Any value 1 to 128 |
Rel-14 onwards |
|
freq-r14 |
Hz |
925977000 for tb1 or 924442000 for tb2 |
Rel-14 onwards |