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TIA-102.BBAC

Project 25 Two-Slot TDMA MAC Layer Specification

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Organization: TIA
Publication Date: 1 November 2019
Status: active
Page Count: 80
scope:

This document specifies the MAC layer protocol for logical channels on the Um2 interface. This document specifies the following aspects of the logical channel MAC layer:

• Architecture description (section 2)

• Logical channel structure (section 3)

• Burst structure (section 4)

• Burst field definitions (section 5)

• Bearer Service description (section 6)

• Burst Bit Locations (Annex A, Annex B, and Annex C)

This document also provides information on the Galois Field for the Reed Solomon codes (Annex D).

The information necessary to enable an interoperable MAC layer protocol for two-slot TDMA logical channels is provided in this document or referenced in other documents as appropriate. This document assumes the reader has a good working knowledge of the two-slot TDMA document suite identified in [11] and of trunked LMR systems as described in [10].

Document History

TIA-102.BBAC
November 1, 2019
Project 25 Two-Slot TDMA MAC Layer Specification
This document specifies the MAC layer protocol for logical channels on the Um2 interface. This document specifies the following aspects of the logical channel MAC layer: • Architecture description...
TIA-102.BBAC
February 1, 2013
Project 25 Phase 2 Two-Slot TDMA Media Access Control Layer Description Addendum 1
A description is not available for this item.
TIA-102.BBAC
December 1, 2010
Project 25 Phase 2 Two- Slot TDMA Media Access Control Layer Description
This clause defines the scope of this standard and provides related information including normative and informative references and a glossary of terms. Scope of the Standard The reference point for...

References

This document references:
TIA-102.AAAD - Project 25 Digital Land Mobile Radio Block Encryption Protocol
Published by TIA on November 24, 2015
The Project 25 standard covers all of the parts of a system for public-safety Land Mobile Radio communications. These systems include portable radios for hand held operation, mobile radios for...
This document references:
TIA-102.AABB - Project 25 Trunking Control Channel Formats
Published by TIA on April 1, 2011
The intent of this document is to define the general control channel structures to be employed on the Project 25 trunking control channel. The 9600 b/s control channel scheme is designed to be...
This document references:
TIA-102.AABC - Project 25 Trunking Control Channel Messages
Published by TIA on April 16, 2019
TIA-102 digital radio systems optionally support a trunking mode of operation. This document provides an overview of the essential attributes of the trunking control channel messaging such that,...
This document references:
TIA-102.BAAA - Project 25 FDMA- Common Air Interface
Published by TIA on June 19, 2017
The TIA-102 Documentation Suite covers all of the parts of a system for public safety land mobile radio communications. These systems have subscriber units (which include portable radios for hand...
This document references:
TIA TSB-102.BBAA - Project 25 Two-Slot TDMA Overview
Published by TIA on March 1, 2010
Scope of the P25 Two-Slot TDMA Standard This document describes the P25 Phase 2 Two-Slot TDMA Standard in a general way. The P25 Phase 2 Two-Slot TDMA Standard is a suite of P25 standards documents....
This document is referenced by:
TIA-102.BACA - Project 25 Inter-RF Subsystem Interface Messages and Procedures for Voice Services, Mobility Management, and RFSS Capability Polling Services
Published by TIA on November 1, 2012
This document provides a detailed specification of the messages and procedures required between RFSSs within a given LMR system, and across LMR systems, in order to provide mandatory voice services...
This document is referenced by:
TIA-102.BACD - Project 25 ISSI Messages and Procedures for Supplementary Data-Addendum 3- Interworking with an IWF
Published by TIA on February 1, 2021
Addendum Scope This document will only include information relevant to interworking with an IWF. The reader is referred to [102BACD] for all other pertinent information. The next complete revision of...
This document is referenced by:
TIA-102.CCAB - Project 25 Two - Slot Time Division Multiple Access Transceiver Performance Recommendations
Published by TIA on March 17, 2014
This Standard provides physical layer performance standards under standard conditions for 12.5 kHz channelization digitally modulated radio equipment used in the Private (Dispatch) Land Mobile...
This document is referenced by:
TIA-102.CCAA - Project 25 Two-Slot Time Division Multiple Access Transceiver Measurement Methods
Published by TIA on March 17, 2016
This standard provides definition and methods of measurement for radio equipment used in the Private (Dispatch) Land Mobile Services that employs the Two-Slot Time Division Multiple Access (TDMA)...
This document is referenced by:
1221 AMD 1 - Standard for the Installation, Maintenance, and Use of Emergency Services Communications Systems
Published by NFPA on August 26, 2021
A description is not available for this item.
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