Cingular EGPRS (EDGE) speed and latency

Test Environment

* IBM ThinkPad T30 (2 GHz P4M) with 512 MB
* Windows XP Pro with SP2
* Sony Ericsson GC82 PC Card (EGPRS/EDGE Class 10)
* Sony Ericsson Wireless Manager

Location

San Ramon, CA (San Francisco Bay Area, East Bay)
Good signal area (4-5 bars)

Methodology

Download compressed synthetic 1MB test file several times with Windows XP FTP
client in Binary mode to measure throughput. Ping to measure latency.

Throughput Results

ftp: 1048576 bytes received in 55.37Seconds 18.94Kbytes/sec.
ftp: 1048576 bytes received in 52.36Seconds 20.03Kbytes/sec.
ftp: 1048576 bytes received in 63.02Seconds 16.64Kbytes/sec.
ftp: 1048576 bytes received in 54.93Seconds 19.09Kbytes/sec.
ftp: 1048576 bytes received in 58.88Seconds 17.81Kbytes/sec.
ftp: 1048576 bytes received in 55.77Seconds 18.80Kbytes/sec.

Latency

Pinging 66.102.164.7 with 32 bytes of data:

Reply from 66.102.164.7: bytes=32 time=394ms TTL=255
Reply from 66.102.164.7: bytes=32 time=335ms TTL=255
Reply from 66.102.164.7: bytes=32 time=315ms TTL=255
Reply from 66.102.164.7: bytes=32 time=313ms TTL=255
Reply from 66.102.164.7: bytes=32 time=309ms TTL=255
Reply from 66.102.164.7: bytes=32 time=308ms TTL=255
Reply from 66.102.164.7: bytes=32 time=287ms TTL=255
Reply from 66.102.164.7: bytes=32 time=305ms TTL=255
Reply from 66.102.164.7: bytes=32 time=304ms TTL=255
Reply from 66.102.164.7: bytes=32 time=282ms TTL=255

Ping statistics for 66.102.164.7:
Packets: Sent = 10, Received = 10, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 282ms, Maximum = 394ms, Average = 315ms

Summary

* Average download speed of 18.6 KBytes/sec (150 Kbps)
* Peak (sustained) speed of 20.0 KBytes/sec (160 Kbps)
* Latency greatly improved over prior tests

--
Best regards, HELP FOR CINGULAR GSM & SONY ERICSSON PHONES:
John Navas <http://navasgrp.home.att.net/#Cingular>

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› See More: Cingular EGPRS (EDGE) speed and latency

p.s. Tests run over MEdia (wap.cingular),
as compared to Data Connect (isp.cingular).

In <[email protected]> on Sat, 15 Oct
2005 22:29:40 GMT, John Navas <[email protected]> wrote:

>Test Environment
>
>* IBM ThinkPad T30 (2 GHz P4M) with 512 MB
>* Windows XP Pro with SP2
>* Sony Ericsson GC82 PC Card (EGPRS/EDGE Class 10)
>* Sony Ericsson Wireless Manager
>
>Location
>
>San Ramon, CA (San Francisco Bay Area, East Bay)
>Good signal area (4-5 bars)
>
>Methodology
>
>Download compressed synthetic 1MB test file several times with Windows XP FTP
>client in Binary mode to measure throughput. Ping to measure latency.
>
>Throughput Results
>
>ftp: 1048576 bytes received in 55.37Seconds 18.94Kbytes/sec.
>ftp: 1048576 bytes received in 52.36Seconds 20.03Kbytes/sec.
>ftp: 1048576 bytes received in 63.02Seconds 16.64Kbytes/sec.
>ftp: 1048576 bytes received in 54.93Seconds 19.09Kbytes/sec.
>ftp: 1048576 bytes received in 58.88Seconds 17.81Kbytes/sec.
>ftp: 1048576 bytes received in 55.77Seconds 18.80Kbytes/sec.
>
>Latency
>
> Pinging 66.102.164.7 with 32 bytes of data:
>
> Reply from 66.102.164.7: bytes=32 time=394ms TTL=255
> Reply from 66.102.164.7: bytes=32 time=335ms TTL=255
> Reply from 66.102.164.7: bytes=32 time=315ms TTL=255
> Reply from 66.102.164.7: bytes=32 time=313ms TTL=255
> Reply from 66.102.164.7: bytes=32 time=309ms TTL=255
> Reply from 66.102.164.7: bytes=32 time=308ms TTL=255
> Reply from 66.102.164.7: bytes=32 time=287ms TTL=255
> Reply from 66.102.164.7: bytes=32 time=305ms TTL=255
> Reply from 66.102.164.7: bytes=32 time=304ms TTL=255
> Reply from 66.102.164.7: bytes=32 time=282ms TTL=255
>
> Ping statistics for 66.102.164.7:
> Packets: Sent = 10, Received = 10, Lost = 0 (0% loss),
> Approximate round trip times in milli-seconds:
> Minimum = 282ms, Maximum = 394ms, Average = 315ms
>
>Summary
>
>* Average download speed of 18.6 KBytes/sec (150 Kbps)
>* Peak (sustained) speed of 20.0 KBytes/sec (160 Kbps)
>* Latency greatly improved over prior tests

--
Best regards, HELP FOR CINGULAR GSM & SONY ERICSSON PHONES:
John Navas <http://navasgrp.home.att.net/#Cingular>

John,

Is this because of a network upgrade? If you have any EDGE capable
phone or PC Card, would these lower latencies be automatic, or would
they require a firmware upgrade?

[POSTED TO alt.cellular.cingular - REPLY ON USENET PLEASE]

In <[email protected]> on 17 Oct 2005
07:54:14 -0700, "Bob" <[email protected]> wrote:

>Is this because of a network upgrade? If you have any EDGE capable
>phone or PC Card, would these lower latencies be automatic, or would
>they require a firmware upgrade?

They should be automatic if your system is tuned properly.

--
Best regards, HELP FOR CINGULAR GSM & SONY ERICSSON PHONES:
John Navas <http://navasgrp.home.att.net/#Cingular>