3m/n World wide communication + Implications

3m/n World wide communication + Implications

1. Data connections

   • Cellular Network
     • GSM network allowing calls and texts or 3G/4G connections, allowing data to be transferred
     • Bluetooth, USB or Wi-Fi can be used to connect mobile to laptops or tablets
     • X- Cost increases for foreign calls
     • O- Good for safety
   • WiFi
     • Hotspots enables any WiFi enabled device to use the data connection
     • Hotspot is connected to a network of some kind
       • E.g LAN connected to internet through router
       • Mobile device connected to cellular network
   • Satellite data link
     • WiFi Hotspot or LAN connected to a satellite data link
     • Used in remote places
     • X- Limited Wi-FI, limits functunality
     • X- Expensive phone and credit
     • O- Very Secure
     • O- Good for emergencies

2. Mobile Phones

   • Can use apps or www for communication
   • Cellular Network
     • Phone calls
     • Text messaging
   • 3G/4G or Wi-Fi
     • Email
     • Video conferencing
     • Discussion forums
     • Social networking

3. Satellite phone

   • O- Can be used anywhere in the world
   • X- Battery life limited to 4 hour talk time (30 hour standby)
   • Phone calls, text messaging, pager messaging
   • Can create Hotspot
     • X- Bandwidth limited to 38Kbps

4. Tablet/ Laptop with 3/4G

   • Most have 3G/4G built in
     • Others can use dongle in USB port or Wi-Fi
       • Hotspot can be created by mobile/satellite phone or LAN
         • X- Can slow down both devices
         • X- If unprotected, others can use Wi-Fi and use up phone data.
   • Device can communicate using applications e.g. www, email

5. Nomadic networks

   • A network of portable devices to access the internet and extranets