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TIA-102.BCAD

2011 Edition, September 2011

Complete Document

Project 25 Phase 2 Two-Slot Time Division Multiple Access Trunked Voice Services Common Air Interface Conformance Specification



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Product Details:

  • Revision: 2011 Edition, September 2011
  • Published Date: September 2011
  • Status: Active, Most Current
  • Document Language: English
  • Published By: Telecommunications Industry Association (TIA)
  • Page Count: 94
  • ANSI Approved: No
  • DoD Adopted: No

Description / Abstract:

This document is intended to test aspects of the operation of subscriber and Radio Frequency Sub-System (RFSS) equipment in the interests of adhering to key aspects of the Two-Slot Trunked TDMA Voice Services Common Air Interface MAC protocol as described in [R1]. It includes a set of CP items for primitive operation. A CP is a conformance test consisting of set of preconditions and input parameters that result in an expected output from a Unit Under Test. The CP nomenclature provides an independent conformance test numbering system that is unique with this Standard and not dependent on the paragraph, clause, or subclause numbering used in the document. The CPs are:

CP 1 - Burst Field Conformance Tests


Tests the Reed Solomon encoder.


CP 2 - Transmit Voice Channel Conformance Test


Tests the modulation polarity, construction, coding, interleaving, and scrambling of individual bursts, superframes, and ultraframes.


CP 3 - Receive Voice Channel Conformance Test


Tests the error correction of the decoders in the receiver.


In general, the standard defines test messages, which are encoded and processed to generate expected test vectors which are documented in Annex A, as well as in text files distributed with the standard document. An expected test vector can be an intermediate encoded codeword or can represent bursts that could occur on the Phase 2 Two-Slot Time Division Multiple Access – Trunked Voice Services Common Air Interface.

A test of a transmitter function in a UUT, such as an encoder, consists of applying a test message to the transmitter function, and recording the output that results. This output from the UUT is then compared with the expected test vector to verify correctness. In a test of a receiver function in a UUT, the test vector is applied to the receiver function, perhaps with transmission errors, and the receiver output is then recorded. If the receiver corrected the errors, then the output of the receiver should match the expected message for correctness.

The test messages and test vectors used in the transmitter tests CP 1 and CP 2 are selected to exercise the modulator and non-voice encoders of the transmitter under test for various codes used in the Two-Slot Trunked TDMA Voice Services Common Air Interface [R1]. In CP 3, test vectors defined in CP 1 and CP 2 are applied as input to test the receiver response. The test vectors used are selected to exercise the error correcting and detecting mechanisms of the non-voice decoders of the receiver under test. The functionality produced by the receiver is not tested in these tests but can be inferred from the information content of the test input, the conditions of the test, and the operating characteristics of the receiver.

This document is intended for use by manufacturers to serve as a standard reference for verifying adherence to the MAC protocol as described in [R1], as a means of assisting manufacturers in the development of interoperable equipment, and as a means of assisting manufacturers in the diagnosis of interoperability issues, should they occur. This document is not designed for use as a functional test suite. This document assumes an audience familiar with terms and definitions contained in the standards.