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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 ...
The availability of a channel differs from person to person and from situation to situation. For example, many people do not have access to mass media, like television, to send their message to a wide audience. [131] [135] Gerbner's emphasis on the relation between message and reality has been influential for subsequent models of communication ...
A physical medium in data communications is the transmission path over which a signal propagates. Many different types of transmission media are used as communications channel . In many cases, communication is in the form of electromagnetic waves.
In communication, media (sing. medium) are the outlets or tools used to store and deliver semantic information or contained subject matter, described as content. [1] [2] The term generally refers to components of the mass media communications industry, such as print media (), news media, photography, cinema, broadcasting (radio and television), digital media, and advertising. [3]
In telecommunications and computer networks, a channel access method or multiple access method allows more than two terminals connected to the same transmission medium to transmit over it and to share its capacity. [1] Examples of shared physical media are wireless networks, bus networks, ring networks and point-to-point links operating in half ...
Medium theory is a mode of analysis that examines the ways in which particular communication media and modalities impact the specific content (messages) they are meant to convey. It Medium theory refers to a set of approaches that can be used to convey the difference in meanings of messages depending on the channel through which they are ...
Collisions are a condition that arises when two or more data stations attempt to transmit at the same time over a shared channel, or when two data stations attempt to transmit at the same time in a half duplex communication link. A contention-based channel access (multiple access) protocol is a protocol where data packet collisions may occur ...
Time-division multiple access (TDMA) is a channel access method for shared-medium networks. It allows several users to share the same frequency channel by dividing the signal into different time slots. [1] The users transmit in rapid succession, one after the other, each using its own time slot.