4.2 Common requirements of test equipment
38.508-13GPP5GSPart 1: Common test environmentRelease 17TSUser Equipment (UE) conformance specification
Mobile conformance testing can be categorized into 3 distinct areas:
– RF Conformance Testing consisting of:
– Transmission and Reception Conformance Testing.
– Performance Conformance Testing.
– RRM Conformance Testing.
– Signalling Conformance Testing.
The test equipment required for each category of testing may or not be different, depending on the supplier of the test equipment. However, there will be some generic requirements of the test equipment that are essential for all three categories of test, and these are specified in this clause.
In addition, there will be requirements to test operation in multi-system configurations other than E-UTRA and NR dual connectivity (EN-DC). However, these would not form a common test equipment requirement for the three test areas and are not considered in the present document.
4.2.1 General functional requirements
NOTE: This clause has been written such that it does not constrain the implementation of different architectures and designs of test equipment.
All test equipment used to perform conformance testing for frequency range 1 on a UE shall provide the following minimum functionality:
– Conducted test method
All test equipment used to perform conformance testing for frequency range 2 on a UE shall provide the following minimum functionality:
– OTA test method
All test equipment used to perform conformance testing on a UE shall provide a platform suitable for testing UE’s that are either:
– non-standalone(NSA) mode; or
– standalone(SA) mode.
All test equipment used to perform conformance testing on a UE shall provide a platform suitable for testing UE’s that are either of following duplex mode for NR and E-UTRA (NSA only) respectively.
a) FDD Mode; or
b) TDD Mode; or
c) both FDD/TDD Modes; or
d) HD-FDD Mode (NR RedCap only).
All test equipment shall provide the following minimum functionality.
– The capability of emulating a single NR cell and a single E-UTRA (for NSA mode only) cell with the appropriate channels to allow the UE to register on the cell.
– The capability to allow the UE to set up an RRC connection with the system simulator, and to maintain the connection for the duration of the test.
– The capability (for the specific test):
– to select and support an appropriate radio bearer for the downlink;
– to set up and support the appropriate radio bearer for the uplink;
4.2.2 Minimum functional requirements
4.2.2.1 Supported Cell Configuration
The System Simulator shall provide the capability to simulate a minimum number of cells whose number and capabilities are governed by the test cases that need to be performed (test cases are defined in TS 38.523-1 [12] (Signalling), TS 38.521-1 [14], TS 38.521-2 [15], TS 38.521-3 [16] (TRx), TS 38.521-4 [17] (Performance), TS 38.533 [18] (RRM), TS 37.571-1 [39] and TS 37.571-2 [40] (Positioning)).
To perform test cases requiring multiple cell(s), the system simulator shall provide multiple cells offering the capabilities as required by the test case.
The type and number of channels (especially physical channels) constitute an important set of capabilities for a cell. The following clauses list possible channels that may be supported by the SS. Each channel type, however, and the minimum number of channels needed are only mandatory if specific test cases require them.
The mapping between Logical and Transport channels is as described in TS 38.321 [20]. Similarly, the mapping between Transport channels and Physical channels is as described in TS 38.211, TS 38.302 and TS 38.212. The reference measurement channels (mapping between Transport channels and Physical channels for PDSCH/PDCCH) are defined in TS 38.521-1 [14] annex A
4.2.2.1.1 Supported Channels for an E-UTRA cell (NSA mode only)
Requirement for supported channels for E-UTRA cell is described in TS 36.508[2].
4.2.2.1.2 Supported Channels for a NR cell
4.2.2.1.2.1 Logical channels
|
Logical channel |
Minimum number |
Comments |
|
BCCH |
0 for EN-DC, 1 for SA |
|
|
CCCH |
0 for EN-DC, 1 for SA |
|
|
DCCH |
0 for EN-DC, 2 for SA |
Split SRB or SRB3 is optional in EN-DC |
|
PCCH |
0 for EN-DC, 1 for SA |
|
|
DTCH |
n |
Depending on SS’s support for RB service testing |
4.2.2.1.2.2 Transport channels
|
Transport channel |
Minimum number |
Comments |
|
BCH |
1 |
|
|
PCH |
N/A for EN-DC, 1 for SA |
|
|
RACH |
1 |
|
|
DL-SCH |
1 |
|
|
UL-SCH |
1 |
4.2.2.1.2.3 Physical channels
|
Physical channel |
Minimum number |
Comments |
|---|---|---|
|
PBCH |
1 |
Physical Broadcast Channel |
|
PDCCH |
1 |
The physical downlink control channel carries scheduling assignments and other control information. |
|
PDSCH |
1 |
Physical Downlink Shared Channel |
|
PUCCH |
1 |
The physical uplink control channel carries uplink control information |
|
PUSCH |
1 |
Physical Uplink Shared Channel |
|
PRACH |
1 |
Physical Random Access Channel |
4.2.2.1.2.4 Physical signals
|
Physical signal |
Minimum number |
Comments |
|---|---|---|
|
Demodulation reference signal |
NA |
UL |
|
Sounding Reference signal |
NA |
UL, if applicable |
|
Phase Tracking Reference Signal |
NA |
UL, if applicable |
|
Demodulation reference signal(PDSCH) |
NA |
DL |
|
Demodulation reference signal(PDCCH) |
NA |
DL |
|
Demodulation reference signal(PBCH) |
NA |
DL |
|
Phase Tracking Reference Signal |
NA |
DL, if applicable |
|
CSI reference signal |
NA |
DL |
|
Primary synchronisation signal |
NA |
DL |
|
Secondary synchronisation signal |
NA |
DL |