Allnet Insight’s Top 20 Peak Downlink Throughput September 1, 2015 10:00

These graphs detail the peak capacity for downlink files and streaming video for the four major national wireless carriers plus Dish and USCellular.  They illustrate the peak capacity on a market-by-market basis.  In creating the graphs, I anticipate the usage of each wireless carrier’s total spectrum available, not just the spectrum they have dedicated to LTE at this time. These graphs allow you to see the significant capacity advantage that Sprint will have once they deploy their 2.5GHz spectrum. They also provide a market-by-market comparison of AT&T and Verizon capacity.  You can see that AT&T has a capacity advantage versus Verizon in all Top 20 markets except Minneapolis-St. Paul.  In addition, you can see the relatively low capacity that T-Mobile is able to offer and the capacity that Dish could provide after they launch a network. 

I was able to construct these graphs by using Allnet Insights and Analytics Spectrum Ownership Analysis Tool determine the number of LTE channels that each carrier’s spectrum can support.

 Assuming that each LTE channel had the follow achievable LTE Peak Data Rates:

These rates were applied to each of the carriers LTE channels to create a total peak downlink throughput.  For all EBS/BRS spectrum (Sprint’s 2.5GHz spectrum), I assumed TDD (Time Division Duplex) LTE operation and each channel’s throughput was reduced to 75% to reflect the 75:25 downlink to uplink ratio for TDD operation. TDD LTE utilizes a single radio channel to both transmit to the mobile device (downlink) and transmit from the mobile device (uplink). In TDD LTE timeslots, similar to the wedges on the Wheel of Fortune, carry either downlink traffic or uplink traffic during that time interval.  Since internet traffic is typically 75% downlink and 25% uplink, US operators dedicate 75% of the wedges to downlink and 25% to uplink.  Most US spectrum bands are configured for FDD (Frequency Division Duplex) LTE, which utilizes two radio channels, one to transmit to the mobile device (downlink), and one to transmit from the mobile device (uplink).