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Call for Proposals For ATSC-3.0 PHYSICAL LAYER A Terrestrial Broadcast Standard PDF Print E-mail
Tuesday, 26 March 2013 09:23

ATSC Technology Group 3 (ATSC 3.0)

  1. Introduction


    The Advanced Television Systems Committee (ATSC) is an international, non-profit organization developing voluntary standards for digital television systems. ATSC member organizations represent the broadcast, broadcast equipment, motion picture, consumer electronics, computer, cable, satellite, and semiconductor industries. The ATSC DTV Standard (applicable documents include A/52 and A/53, available at http://www.atsc.org/) has been adopted for use in terrestrial broadcasting by the United States, Canada, Mexico, South Korea, Guatemala, Honduras and the Dominican Republic.

    ATSC is in the process of developing a new standard with advanced performance and functionality made possible by new technologies and strategies. This next generation broadcast television standard known as ATSC 3.0 must provide improvements in performance, functionality and efficiency which are significant enough to warrant the challenges of a transition to a new system.

    ATSC 3.0 should maximize the one-to-many (point-to-multipoint) attribute of broadcasting which enables a highly efficient means for distribution of popular content to an unlimited number of receivers. ATSC 3.0 should provide robust mobile services to un-tethered devices that move, such as phones, tablets, laptops and personal televisions. Since these devices are likely to move across borders, it is highly desirable that the specification contains core technologies which will have broad international acceptance and enable global interoperability. ATSC should continue its efforts to facilitate cooperation among the appropriate international organizations.

    The goal of this Call for Proposals (CFP) is to identify technologies that could be combined to create a new physical layer of an ATSC 3.0 Standard.

  2. Scope of Work


    ATSC is in the process of developing a standard for a new delivery method of real-time and non-real-time television content and data to fixed and mobile devices.

    The project includes an assessment of technical requirements, research of possible solutions, and development of documentation to provide a complete specification for fixed and mobile services using new broadcast signals. Wherever practical, the standard shall utilize and reference existing standards that are found to be effective solutions to meet the requirements. Robustness of service for devices operating within the ATSC 3.0 service area should exceed that of current ATSC systems and that of cell phone and other devices enabling services similar to ATSC. Consideration will be given to technologies and proposals that enable a smooth transition from existing systems for both broadcasters and consumers. The initial scope of work for TG3 is as follows:

    "The ATSC 3.0 Technology Group (called TG3) will develop voluntary technical Standards and Recommended Practices for the next-generation digital terrestrial television broadcast system. ATSC 3.0 is likely to be incompatible with current broadcast systems and therefore must provide improvements in performance, functionality and efficiency significant enough to warrant implementation of a non-backwards-compatible system. Interoperability with production systems and non-broadcast distribution systems should be considered."

    It has been envisioned that the ATSC 3.0 system will be designed with a “layered” architecture in order to leverage the many advantages of such a system, particularly pertaining to upgradability and extensibility. The specific layering architecture will not be predetermined, but designed as the specification is created. To set a proper course toward that end, however, a generalized layering model for ATSC 3.0 has been proposed, as shown in Figure 1. This model may be further subdivided and more tightly defined as work progresses, but it provides basic guidance for work to begin on the system in discrete and clearly separable areas. The scope of this Call for Proposals is limited to the base layer of this model, the ATSC 3.0 Physical Layer, which corresponds to Layer 1 and 2 of the ISO/IEC 7498-1 model.

Figure 1 ATSC 3.0 Generalized Layer Architecture

ATSC’s Specialist Group on Physical Layer, TG3/S2, will develop a skeletal physical layer, and its ad-hoc groups will add detail. As elements (pieces from proposals) of a physical layer are agreed to in the ad-hoc groups, a baseline physical layer model will be built. A top level physical layer model is described in Section 5 as a guide to how work will be divided up. One key point to be addressed is the transition from the current A/53 physical layer.

Please follow this link to review the complete document.

Last Updated on Tuesday, 26 March 2013 09:39
 
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