Mobile Network Guide

Mobile University
 Mobile Networks
  Mobile Base Stations
  
Mobile Frequencies
  Mobile Data Speeds

  Mobile Bandwidth
  VoLTE

Mobile Bandwidth

Bandwidth is the width or capacity of the channel, the wider the bandwidth the more data that can be transferred through and the more users the network can handle. As mobile networks have evolved we have seen bandwidth increase from 1MHz up to 20MHz channels.

Telstra use the FDD variant of LTE which uses separate frequencies for downlink and uplink and are called paired frequency bands. An example is Telstra’s LTE 20MHz network on the 700 band, allocating the bandwidth for uplink and downlink. It is also referred to a 2 x 20MHz

700 Band (703-803 MHz)

700 band


Contiguous vs Non-Contiguous

A carriers bandwidth can be Contiguous (within a single block) or Non-Contiguous (spread across a number of smaller blocks.


Contiguous

This is the most efficient use of spectrum for a carrier, being cost effective to deploy and offering faster
data speeds. The mobile device uses the complete 20MHz.

Contiguous Bandwidth


Non-Contiguous

As blocks owned by the carrier are spread across the band they end up with several small pipes compared
with one large pipe. The mobile device only uses 5MHz (only one of the two blocks).

Non Contiguous Bandwidth

 

Telstra Bandwidth

Telstra bandwidth can vary between states:

  • 3G 850 uses 5MHz on HSPA+ and 10MHz on DC-HSPA+. DC-HSPA is available in most areas.
  • 3G 1800 uses 10, 15 or 20MHz depending on the state
  • 4G 700 uses 20MHz of bandwidth across Australia