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Local Content Insertion in the SFN Environment for Geographically Segmented Localcasting
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- Authors
- Y. Wu, X. Wang, P. Angueira, J. Montalban, N. Hur, SJ. Ahn, S.-I. Park
- Issue Date
- 2025-06
- Citation
- International Symposium on Broadband Multimedia Systems and Broadcasting (BMSB) 2025, pp.1-6
- Language
- English
- Type
- Conference Paper
- Abstract
- Recently, Local Content Insertion (LCI) in the Single Frequency Network (SFN) environment has attracted much attention from the broadcast industry. LCI can provide Geographically Segmented Localcasting (GSL) for local multimedia and datacasting services. LCI is enabled by Layered Division Multiplexing (LDM). Region-wide broadcast services can be carried by the LDM Core Layer (CL) forming a large-scale SFN, while the Enhanced Layer (EL) can be implemented for localcasting services. In this setup, a transmitter can be installed anywhere within the intended broadcast service contour, either SFN or single transmitter service area. The new transmitter will enhance the reception of the LDM CL and deliver the LDM EL localized multimedia and datacast services to the designated local service areas. Because the localcasting signal is transmitted on the EL at a reduced power level, co-channel interference between localcasting transmitters is reduced. This paper presents a roadmap for the deployment of LCI/GSL. The use of LDM allows any terrestrial TV system to implement this technology in SFN or High-Power High-Tower (HPHT) environments with backward compatibility to legacy receivers. Cellular wireless networks (5G/6G) can use this technology to seamlessly combine broadcast, multicast and unicast services.
- KSP Keywords
- Broadcast service, Cellular wireless networks, High power, Layered Division Multiplexing, Power Levels, Reduced power, backward compatibility, co-channel interference(CCI), large-scale, service area, single frequency network(SFN)