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Multicast. In computer networking, multicast is a type of group communication where data transmission is addressed to a group of destination computers simultaneously. [1] Multicast can be one-to-many or many-to-many distribution. [2][3] Multicast differs from physical layer point-to-multipoint communication.
Digital multicast television network. A digital multicast television network, also known as a diginet or multichannel, is a type of national television service designed to be broadcast terrestrially as a supplementary service to other stations on their digital subchannels. Made possible by the conversion from analog to digital television ...
Often, the owner of a full-power television station acquires or already owns a low-power secondary station in the same market to carry another network. The use of a digital subchannel on a full-power television station as a replacement for low-power station greatly increases the available coverage area for its programming.
Internet Protocol television (IPTV), also called TV over broadband, [1][2] is the service delivery of television over Internet Protocol (IP) networks. Usually sold and run by a telecom provider, it consists of broadcast live television that is streamed over the Internet (multicast) — in contrast to delivery through traditional terrestrial ...
In the early days of home satellite dishes, the two types of service were low-power C-band service with large dishes 8 to 12 feet wide, and high-power Ku-band. [10] [11] In 1979, COMSAT announced a plan to allow viewers to receive programming directly from broadcast satellites, a concept called direct-broadcast satellite (DBS). This system ...
A broadcast channel is a channel that provides a broadcasting service, i.e. that sends data addressed to all users in the network. Cellular network examples are the paging service as well as the Multimedia Broadcast Multicast Service. A multicast channel is a channel where data is addressed to a group of subscribing users. LTE examples are the ...
Broadcasting is the most general communication method and is also the most intensive, in the sense that many messages may be required and many network devices are involved. [1] This is in contrast to unicast addressing in which a host sends datagrams to another single host, identified by a unique address. Broadcasting may be performed as all ...
Broadcast and Multicast Service (BCMCS) is an interface for providing broadcast and multicast services in 3GPP2 CDMA2000 mobile networks. BCMCS can be used to transfer light video and audio clips or other data to a large group of mobile subscribers in an efficient manner. To do so, BCMCS is a so-called point-to-multipoint service. This means ...