Measuring Parameters


Measuring Parameters
Parameters/Mode GPRS 3G LTE
Cell ID        Y        Y        Y
RSSI        Y        Y        Y
RSCP
       Y
EC/IO
       Y
RSRQ

       Y
RSRP

       Y
SINR

       Y
Ref:
1. LTE DRIVE TEST PARAMETERS http://rftelecomm.blogspot.tw/2013/01/lte-drive-test-parameters.html
2. LTE 簡單說 http://irene7-lte.blogspot.tw/2008/11/radio-signal.html
3. LTE中RSRP、RSSI、RSRQ、RS-CINR是什麼關係 http://digi.aili.com/2261/985837.html

[Unicode] Unicode translate


Mapping BDF (http://www.cl.cam.ac.uk/~mgk25/ucs-fonts.html) to Unicode, example of "uniFFFD"
STARTCHAR uniFFFD
ENCODING 65533
SWIDTH 480 0
DWIDTH 10 0
BBX 10 20 0 -4
BITMAP
0000
0000
0000
3F00
6180
4C80
4C80
7C80
7980
7380
7380
7380
7F80
7380
7380
3F00
0000
0000
0000
0000
ENDCHAR
ENDFONT
Put "\uFFFD" to http://www.ifreesite.com/unicode-ascii-ansi.htm Then we can get "�"

[Open Movie] Some Movies we can refer to



Episode (http://www.caminandes.com/) 
Episode 1: Llama Drama (34M) 
Episode 2: Gran Dillama (120M) 

Big Buck Bunny_movies 
Link http://download.blender.org/peach/bigbuckbunny_movies/

http://albert-oma.blogspot.com/2013/03/rtsp.html
網路上提供測試 RTSP 的伺服器


https://sites.google.com/site/kjkaohome/hdx720/pcslab

http://mm2.pcslab.com/mm/7h2000.mp4

[MBMS] 3GPP TS 25.346 V6.9.1 (2006-09)


Source:

  • http://www.qtc.jp/3GPP/Specs/25346-691.pdf
Te:
  • MBMS: Multimedia Broadcast Multicast Service
  • RAS: Radio Access Network

[iperf] Multicast


Source:

  • Linux: https://github.com/esnet/iperf
  • Windows: https://iperf.fr/iperf-download.php

Installation:
root@raspberrypi:~# uname -a Linux raspberrypi 4.1.6-v7+ #810 SMP PREEMPT Tue Aug 18 15:32:12 BST 2015 armv7l GNU/Linux root@raspberrypi:~# apt-get install iperf root@raspberrypi:~# iperf -v iperf version 2.0.5 (08 Jul 2010) pthreads

Server:
root@raspberrypi:~# iperf -s -u -B 224.0.55.55 -i 1 ------------------------------------------------------------ Server listening on UDP port 5001 Binding to local address 224.0.55.55 Joining multicast group 224.0.55.55 Receiving 1470 byte datagrams UDP buffer size: 160 KByte (default) ------------------------------------------------------------

Client:
root@raspberrypi:~# iperf -c 224.0.55.55 -u -T 32 -t 30 -i 1 -b 100M ------------------------------------------------------------ Client connecting to 224.0.55.55, UDP port 5001 Sending 1470 byte datagrams Setting multicast TTL to 32 UDP buffer size: 160 KByte (default) ------------------------------------------------------------ [ 3] local 192.168.168.115 port 53314 connected with 224.0.55.55 port 5001 [ ID] Interval Transfer Bandwidth [ 3] 0.0- 1.0 sec 11.5 MBytes 96.3 Mbits/sec [ 3] 1.0- 2.0 sec 11.4 MBytes 95.6 Mbits/sec [ 3] 2.0- 3.0 sec 11.4 MBytes 95.9 Mbits/sec [ 3] 3.0- 4.0 sec 11.4 MBytes 95.6 Mbits/sec

Tcpdump:
root@raspberrypi:~# tcpdump port 5001 -i any -s 0 -vv -w /tmp/mc.pcap -OR- root@raspberrypi:~# tcpdump -n -i eth0 -s 1515 udp 18:55:13.043590 IP 192.168.168.115.52764 > 224.0.55.55.5001: UDP, length 1470
Public Server:

  • https://iperf.fr/iperf-servers.php

Status:

  • iPerf3 doesn't support "-u"
  • Some of iPerf2/3 has problem to support "-B"
Fix:
  • https://github.com/esnet/iperf/issues/193

[Redmine] To enable REST API


Here tell us how to enable REST API on Redmine
http://wiki.tracpath.com/redmine%E8%A8%AD%E5%AE%9A%E6%96%B9%E6%B3%95

[Device Remover] To remove system driver on Win7


可以用來移除Win7上面自帶的Driver
http://www.pro-it-education.de/software/deviceremover/
 

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