Base Station System (BSS) equipment specification; Radio aspects
The present document specifies the Radio Frequency (RF) test methods and conformance requirements for GSM 400, GSM 900 and DCS 1800, PCS 1900, GSM 850, MXM 850 and MXM 1900 Base Station Systems (BSS)s. These have been derived from, and are consistent with, the core GSM specifications specified in the requirements reference subclause of each test with the exception that requirements expressed as a reference to regulatory documents (e.g. FCC) have not been included in the present document.
The present document is applicable to BSS meeting the requirements of either GSM Phase 2 or GSM Phase 2+. Unless otherwise stated, all tests are applicable to BSS meeting Phase 2 and/or Phase 2+ GSM requirements, because the requirements of the Phase 2 and Phase 2+ core GSM specifications which are referenced in the test are consistent. Most differences between Phase 2 and Phase 2+ requirements represent Phase 2+ features which are optional for the BSS to support.
For each test, two conformance requirements are specified:
‑ essential conformance requirements;
‑ complete conformance requirements.
Essential conformance requirements are those which are required:
a) to ensure compatibility between the radio channels in the same cell;
b) to ensure compatibility between cells, both co‑ordinated and unco‑ordinated;
c) to ensure compatibility with existing systems in the same or adjacent frequency bands;
d) to verify the important aspects of the transmission quality of the system.
Essential conformance requirements are sufficient to verify the performance of the equipment for radio type approval purposes, in countries where this is applicable. For GSM 850, MXM 850, PCS 1900 and MXM 1900 only the complete conformance requirements are applicable.
Complete conformance requirements may be tested to verify all aspects of the performance of a BSS. These requirements are intended to be used by manufacturers and operators to allow conformance and acceptance testing to be performed in a consistent manner; the tests to be performed should be agreed between the parties.
In some tests there are separate requirements for micro‑BTS and BTS. If there is no separate requirement for a micro‑BTS, the requirements for the BTS apply to a micro‑BTS.
In the present document, the reference point for RF connections (except for the measurement of mean transmitted RF carrier power) is the antenna connector, as defined by the manufacturer. The present document does not apply to repeaters or RF devices which may be connected to an antenna connector of a BSS, except as specified in subclause 4.10.
NOTE: The present document contains both essential conformance requirements and complete conformance requirements. Essential conformance requirements are those requirements which may be deemed sufficient for radio type approval purposes, complete conformance requirements cover all conformance aspects.