Introduction

• Why mobility and what does it require?
• Overview and elementary properties of mobility support in networks
• Application examples
  - conferences, kiosks, ...
• Basic technical problems
  - requirements, models
• Standardisation
  - DECT, HiPerLAN, IEEE 802.11ETSI, IETF, IEEE, ...

Mobility support (physical layer)

• Modulation
• Medium access
  - without control phase (ALOHA, ...)
  - with control phase (DECT, GSM, ...)
  - wireless pecularities (hidden terminals, ...)
• Multiplexing the medium
  - space
  - frequency
  - time
  - code
• Characteristics
  - fading and attenuation
  - statistical and analytical models

Mobility support (network layer)

• Connecting to a network
  - ARP
  - Bootp
  - DHCP
• Location determination (physical and topological)
• Manifesting the current location
• Topology adaptation
  - routing update
  - tunneling
• lazy/eager/seamless handover
• Standardisation
  - Mobile IP
  - IPv6
  - Cellular IP etc.
  - UMTS

Mobility and Security

• Authentication and Authorization
• Standardisation
  - IPSEC

Mobility and QoS

• Wireless transmission quality
• QoS management
  - RSVP
  - DiffServ
• Application requirements
  - Connection time and bandwidth
  - Costs
  - Security