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Cellular Communications and Wireless Standards
Published in Mário Marques da Silva, Cable and Wireless Networks, 2018
The multimedia broadcast and multicast service (MBMS), already introduced in 3GPP Release 6 (HSPA), aims to use spectrum-efficient multimedia services, by transmitting data over a common radio channel. MBMS is a system that allows multiple mobile network users to efficiently receive data from a single content provider source by sharing radio and transport network resources. While conventional mobile communications are performed in unicast* mode, multimedia services are normally delivered in either broadcast or multicast mode. In broadcast mode, data is transmitted in a specific area (MBMS service area) and all users in the specific MBMS service area are able to receive the transmitted MBMS data. Very often, broadcast communications are established in a single direction (i.e., there is no feedback from the receiver into the transmitter). In multicast mode, data is transmitted in a specific area but only registered users in the specific MBMS service area are able to receive the transmitted MBMS data.
Digital TV Architecture Standardization
Published in Hassnaa Moustafa, Sherali Zeadally, Media Networks: Architectures, Applications, and Standards, 2016
The Third-Generation Partnership Project (3GPP), http://www.3gpp.org/index.php, is developing standards for the support of audiovisual services in mobile systems called “Transparent end-to-end packet-switched streaming service” (PSS). PSS allows unicast streaming of content from a server called PSS server to a PSS client located in the mobile UE. In addition to PSS, 3GPP developed the Multimedia Broadcast/Multicast Service (MBMS) which is a unidirectional point to multipoint bearer service in which data is transmitted from a single-source entity to multiple recipients. MBMS is therefore a useful capability that can decrease the amount of data within the network and use resources more efficiently for the support of audiovisual services.
Digital Audio Broadcasting
Published in Jerry D. Gibson, Mobile Communications Handbook, 2017
MediaFLO and DVB-H are also offered as broadcasting services on mobiles. They however constitute a different (lower) level of convergence, as separate radios are used for cellular and broadcasting radio, and broadcasting has larger coverage areas (large cells) than cellular transmission. In contrast, a single radio is assumed with MBMS, serving both broadcasting and cellular transmission modes. MBMS is flexible enough so that it can be used for broadcasting, as well as for multicasting (transmission only to a selected group of users) and even unicasting [BH05,I08].
Overview of the challenges and solutions for 5G channel coding schemes
Published in Journal of Information and Telecommunication, 2021
Madhavsingh Indoonundon, Tulsi Pawan Fowdur
Among all fountain codes, Raptor codes are the ones having the least encoding and decoding complexity. Raptor codes were invented by Shokrollahi (2006) and have been used in standards such as the 3GPP Multimedia Broadcast/Multicast Service (MBMS) standard for broadcast transmission including streaming services (Gao et al., 2013), the DVB-IPTV for offering TV services over IP (IETF, 2018) and the DVB-H IP Datacasting for offering IP services over DVB (Mladenov et al., 2011). The most powerful variant of Raptor codes is called RaptorQ codes (Luby et al., 2011). They support larger block sizes and have better coding efficiency than traditional Raptor codes.