4A Support of 4 Rx capable UEs

37.571-13GPPPart 1: Conformance test specificationRelease 16TSUser Equipment (UE) conformance specification for UE positioning

4A.0 Introduction

In this section, the method for applying 2RX tests to UEs supporting 4RX antenna ports is specified.

4A.1 RAT Independent Tests

All tests in Sections 5 to 7, 11 and 12 are applicable for all types of UEs independently of the number of RX antennas. Only one of the E-UTRAN/UTRAN RX antennas shall be connected to the SS.

4A.2 RAT Dependent Tests

All tests in Sections 8 to 10 are specified for UEs supporting either category 0 (1RX) or 2RX. No tests cases are currently specified in Sections 8 to 10 that are applicable only to 4RX antenna ports, so 4RX capable UEs are always tested by reusing tests that were originally specified for 2RX UEs.

4A.2.1 Principle of testing

4A.2.1.1 Single carrier tests

ECID (Section 8) and OTDOA Measurement Accuracy test cases shall be tested on all bands supported by the UE. For bands where 2RX is supported, the test shall be performed with the antenna connection specified in 4A.2.1.3. For bands where only 4RX is supported, the test shall be performed with the antenna connection specified in 4A.2.1.4.

OTDOA Measurement Reporting Delay test cases shall be tested on any band where 2RX is supported, using the antenna connection specified in 4A.2.1.3. If 2RX is not supported on any band, any 4RX band shall be tested, using the antenna connection specified in 4A.2.1.4.

4A.2.1.2 Carrier Aggregation tests

For all carrier aggregation tests, the antenna connection for each cell needs to be considered separately. If a PCell or SCell is in a band where 2RX is supported, the test shall be performed using the antenna connection specified in 4A.2.1.3 for that cell. Otherwise, the test shall be performed using the antenna connection specified in 4A.2.1.4 for that cell.

4A.2.1.3 Antenna connection for bands where 2RX is supported

For bands where 2RX is supported, it is left to the UE declaration and AP configuration to decide which 2 of the 4 Rx ports are connected with data source from system simulator. The remaining 2 Rx ports shall be connected with zero input. No test parameters or requirements are modified.

4A.2.1.4 Antenna connection for bands where 4RX is supported

For bands where 4RX is supported, all 4 Rx are connected with data source from system simulator. The system simulator shall provide independent noise and fading (low correlation) for each antenna port.