On a 'complexity per cubic inch' scale, cell phones are some of the most intricate devices people use on a daily basis. Modern digital cell phones can process millions of calculations per second in order to compress and decompress the voice stream. If you take a basic digital cell phone apart, you find that it contains just a few individual parts. Improving upon the ripeness of 3G which paved way for good mobile web browsing experience is the improved 3G technology called High Speed Packet Access (HSPA), simply shown as “H” on the mobile signal bar. While HSPA may sound good in paper, it is later more advanced form which make it an altogether better choice against 3G in the form of. Xiaomi Redmi Note 10s 5G is an upcoming smartphone by Xiaomi with an expected price of Yemeni Rial YER 62,500 in Yemen, all specs, features and Price on this page are unofficial, official price, and specs will be update on official announcement.
Mobile phones with HSDPA support. High Speed Download Packet Access is the new version of 3G (sometimes referred to as 3.5G) that takes download speeds on your mobile up to 7.2Mbit. The head phone is new and still sealed in plastic bag (see last photo). Battery Type: User replaceable. Plum AXE Plus 2 Z404 4G HSPA/GSM Mobile Smart Phone Dual SIM 4-in Black Unlocked eBay.
Info by E-Tinker | Last update on 2020-10-05 | Created on 2012-11-13
In mobile communications, frequently, the terms GSM, GPRS, EDGE, UMTS, HSPA and LTE appear. These terms refer to different standards of data transfer and are noticeable for the mobile phone user mainly in a different data transfer rate. In this table, I have I contrasted the different standards:
Shortcut | Name | Download | Upload | Display |
GSM | Global System for Mobile Communications | 14,4 Kbit/s | 14,4 Kbit/s | 2G |
GPRS | General Packet Radio Service | 53,6 Kbit/s | 26,8 Kbit/s | G |
EDGE | Enhanced Data Rate for GSM Evolution | 217,6 Kbit/s | 108,8 Kbit/s | E |
UMTS | Universal Mobile Telelcommunication Service | 384 Kbit/s | 128 Kbit/s | 3G |
HSPA | High Speed Packet Access | 7,2 Mbit/s | 3,6 Mbit/s | H |
HSPA+ | Evolved High Speed Packet Access Release 6 | 14,4 Mbit/s | 5,76 Mbit/s | H+ |
HSPA+ | Evolved High Speed Packet Access Release 7 | 21,1 Mbit/s oder 28,0 Mbit/s | 11,5 Mbit/s | H+ |
HSPA+ | Evolved High Speed Packet Access Release 8 | 42,2 Mbit/s | 11,5 Mbit/s | H+ |
HSPA+ | Evolved High Speed Packet Access Release 9 | 84,4 Mbit/s | 11,5 Mbit/s | H+ |
HSPA+ | Evolved High Speed Packet Access Release 10 | 168,8 Mbit/s | 23,0 Mbit/s | H+ |
LTE | Long Term Evolution | 100 Mbit/s | 50 Mbit/s | 4G |
LTE-A | LTE Advanced | 1 Gbit/s | 500 Mbit/s | 4G |
5G | 5th Generation Wireless Systems | 20 Gbit/s | 10 Gbit/s | 5G |
In the 'Name' column, you will find the long name for each abbreviation. Under 'Download' and 'Upload', the maximum download and upload speeds that can be reached with the standards are listed. Under 'Display', you can see how the standard is usually displayed in the status bar of the cell phone, when it is connected to the appropriate network.
Note for HSPA: The standard HSPA (High Speed Packet Access) is divided into High Speed Downlink Packet Access (HSDPA) for downloading and High Speed Uplink Packet Access (HSUPA) for uploading data.
Note for HSPA+: As you can see, there are several releases in the HSPA+ development increasing the speed. Technically, this is achieved by using a higher order modulation, the multiple antenna technique (also known as multiple input and multiple output technique, MIMO), or by combining multiple cells (Dual Carier, Dual Cell HSDPA). Of course, in practice, those high speeds are hard to achieve. They are only accessible under best conditions, for example if you are the only one in a particular cell. So, you should better refer to the Release 6 or 7 speeds when seeing a H+ in your display.
Development of standards and networks
At the beginning of the digital mobile phone age, there was only the GSM network as a replacement for analog systems. According to this, GSM is also called 2G, the second generation. Gradually, new, better and fast systems developed. GPRS and EDGE also use the GSM network, the higher speeds of EDGE is the result of an improved technology. The third generation is the UMTS network (3G). Again, on the 3G network, the improvements HSPA (H) and HSPA+ (H+) are based, allowing faster transfer rates in the 3G network. Finally, the fourth generation named LTE (4G) was presented, which again brings a significant increase in transfer rates.
In theory, in the individual standards higher rates are possible technically, in practice, often not even the values from the table are reached, since there are rarely existing ideal conditions.
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