Difference Between HSDPA and HSUPA
HSDPA vs HSUPA
HSPA (High Speed Packet Access), commonly referred to as 3.5G, is an upgrade to WCDMA networks that allows for much higher data speeds for internet connectivity. There are two aspects to this technology and each is more or less independent of the other. HSDPA (High Speed Downlink Packet Access) is the one that improves the downlink of the data transmission while HSUPA (High Speed Uplink Packet Access) is the one that improves the uplink or transmission from the mobile device to the network.
Common practices that would be affected by having HSDPA include watching online videos, browsing sites, downloading files, and a lot more. If you usually send emails with large attachments, upload files to sites, or seed files in a file sharing network, then HSUPA would improve the speed at which you do your tasks.
It is common practice for most mobile networks to deploy HSDPA first before doing HSUPA. Based on the usage patterns of majority of the population, internet bandwidth usage is asymmetrical. This means that we often download more compared to uploading. Telecoms know this and that is why they want to improve downlink as soon as it’s possible. There are areas in the world where only HSDPA is deployed while HSUPA is still pretty much absent. Mainly because telecoms want to allocate as much bandwidth to downlink as they can while spending as little as they could. Even when fully deployed HSDPA would still have much higher speeds compared to HSUPA. This is in keeping with the asymmetric use of the bandwidth. Allocating equal bandwidth to each would result in a huge waste for the bandwidth allocated to the uplink.
Although most telecoms do not deploy HSDPA and HSUPA at the same time, it should not be an issue for users in buying mobile phones. Most of the recent mobile phones that support the HSPA technology already have both HSDPA and HSUPA. Getting one or the other would just then depend on when your network decides to deploy either technology in your area.
2. HSDPA affects downloading and browsing while HSUPA affects uploading files and sending emails
3. HSDPA is often deployed way ahead of HSUPA
4. HSDPA has much faster speeds compared to HSUPA
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