Has recently been being asked how fast can reach our SC - GS201 module KBPS, today in this share I collated data: GPRS protocol defines in 4 different ways of encoding: CS - CS - 1 to 4, the propaganda of the theory of GPRS speed 171.2 KB/s, is actually in the use of CS - 4 coding mode, and a user at the same time take up eight channel estimation, but the current network support encoding and CS only CS - 1-2 two, now in the market of the terminal, typically the GPRS mobile phone channel because of the limited technical support to bind number is usually 1 + 3 (both an uplink channel plus three downlink channel), GPRS card can provide 4 + 4 channel binding way, but now the network can only provide 4 + 2 way, namely 4 2), according to the current actual network and terminal, GPRS Internet at this stage theory of speed is 4 * 13.4=43.6 KBPS ordinary mobile phone download speed of 9.05 ~ 40.2 upload speed is 9.05 ~ 13.4 GPRS card download speed of 9.05 ~ 53.6 upload speed is the speed of 9.05 ~ 53.6 mentioned above theory can achieve peak speed, at an average rate is not, it's important to note that the above rate are the RLC layer, to the user experience of practical application layer rate can be calculated on average 12 per channel KBPS,
To summarize:
We generally care about ascending descending speed from the application layer is the TCP or UDP layer, frost cicada SC - GS201 upstream speed is an average of 12 KBPS, average descending velocity is 36 KBPS,

CodePudding user response:

GPRS theory is the highest rate of 171.2 KBPS, but the actual data transfer rate is influenced by factors of network coding mode and terminal support, the user's access speed is now about 30 KBPS - 40 KBPS;
EDGE peak theory may reach 384 kbit/s, from the perspective of the actual situation of currently used, the EDGE of the network speed is probably around 160 KBPS,

CodePudding user response:

EDGE in the actual road test was 80 KBPS, fixed-point test to 110 KBPS, more than 140 are rare,