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Computer Technology in Communication (Mobile Networks (5G, 6G: the future…
Computer Technology in
Communication
Digital communications
Five Component
Medium
Message
Sender
Receiver
Protocol
Transmission media
Wireless
using cables & wires
Wired
through the air
Networks
3 Category
Architecture
peer-to-peer
Each computer or device on the
network is called a peer
client/server
The server controls access to the hardware, software, and other resources on the network
Topology
5 basic topologies
Star
Bus
Ring
Tree
Mesh
Network topology is the arrangement or layout of computers/devices on a network
Area of
coverage
LAN: Local Area Network
MAN: Metropolitan Area Network
BAN: Body Area Network
WAN: Wide Area Network
PAN: Personal Area Network
The Internet
Send/post messages
Access information
Communicate with friends and family
Internet is a network
Communication
transmission media
Two types of transmission media
Wireless
Infrared
Broadcast radio
Cellular radio
Microwaves
Communication satellites
Physical
Coaxial cable (copper)
Twisted pair cable (copper)
Fiber-optic cable (glass/plastic)
Communication
standards and protocols
Network standards
The way computers access the medium to which they are connected
Network protocols
A network protocol is a standard that outlines characteristics of how two devices communicate on a network
Mobile Networks
1G: voice only (analog signals)
2G: voice & data, added SMS
G refers to Generation
3G: voice, data & video, added MMS
4G: enhanced 3G
5G, 6G: the future generation, beyond 4G
