Thomas Kunz
Systems and Computer Engineering
Mobile communication
nTwo aspects of mobility:
–user
mobility: users communicate (wireless) “anytime, anywhere, with anyone”
–device
portability: devices can be connected anytime, anywhere to the network
nWireless vs. mobile Examples
ű ű stationary computer
ű ü notebook in a hotel
ü ű wireless LANs in historic buildings
ü ü Personal Digital Assistant (PDA)
ű ű stationary computer
ű ü notebook in a hotel
ü ű wireless LANs in historic buildings
ü ü Personal Digital Assistant (PDA)
nThe demand for mobile communication creates the need for
integration of wireless
networks into existing fixed networks:
–local area
networks: standardization of IEEE 802.11,
ETSI (HIPERLAN)
ETSI (HIPERLAN)
–Internet:
Mobile IP extension of the internet protocol IP
–wide area
networks: e.g., internetworking of GSM and ISDN