6.1 Static Layer 1 functions

3GPP51.021Base Station System (BSS) equipment specificationRadio aspectsRelease 17TS

6.1.1 Test purpose

To verify the following static Layer 1 transmitter functions:

1) the RF equipment;

2) the multiplexing and multiple access functions;

3) the interleaving and the channel encoding on the transmit side.

6.1.2 Test case

The BSS shall be configured with the maximum number of TRXs, with ARFCNs which shall be distributed over the entire declared bandwidth of operation for the BSS under test. One TRX shall be configured to support the BCCH. If the manufacturer declares that slow frequency hopping is supported, this shall be enabled.

Each TRX shall transmit a normal GSM modulated signal and the BSSTE shall be connected to the transmitter antenna connector. A known bit sequence exceeding a length of a superframe (1326 TDMA‑frames) shall be input before channel encoding in the BSS and a bit sequence shall be output after channel decoding in the BSSTE.

All logical channel types supported by the BSS shall be tested. The test shall be repeated for each TRX in the BSS configuration, for each logical channel supported by it.

NOTE: Some logical channels are only supported by the TRX configured to support the BCCH.

For measurements in VAMOS mode the test shall be performed on both VAMOS sub-channels for the smallest supported absolute SCPIR_DL value (in dB).

6.1.3 Void

6.1.4 Conformance requirement

Test Environment

Normal.

Minimum requirement

The output bit sequence shall be bit exact for all logical channel types.

6.1.5 Requirement reference

3GPP TS 45.001, 3GPP TS 45.002, 3GPP TS 45.003 and 3GPP TS 45.005.