Tuesday, February 11, 2014

This is my first blog. It took me a long time to start something like this. I still do not understand quite well the concept of "blogging", that if there even one exists. My objective here is to try to take the reader by the hand on where to find information that is reliable and accurate (For the most part since I will be using references to Wikipedia and personal websites that I find useful)
This last statement is off course debatable, working for many years in telecommunications and having the luck to be working on wireless data communication I have seen the expansion and extremely fast adoption of technologies like the internet, specifically web search engines and even more specific Google to be the most valuable tool for a telecommunications engineer.  Which in turn in my mind this has allowed the extremely rapid evolution of other technologies like wireless communication.
I have heard many times working on delivery projects and on troubleshooting networking, computer and telecommunications problems that "Google is your best friend". And yes if you can personalize a tool the yes indeed he is your best friend. I guess yes one can personalize a tool this days and treat such as a person, apple did it that to the smartphone with Siri.
Anyways even though Google is a powerful tool in research as it can point someone to the contents of some sites like wikipedia the internet is also (in my opinion) the great highway of misinformation. People uses it and what it reads on "the internet" as the truth or the source of solutions to every single problem and just by googling and finding webpages and videos one can become, a skilled musician, plumber, electrician, mechanic, etc while solving one specific of our every day life problems at home or at work.
I am not saying that is not possible to learn great deal and actually become a musician, plumber electrician, even a mechanical, electronics or telecommunications engineer. I think George Lucas with his edutopia.org project and many others have it right that there most be different ways on our approach to education, whether is for K-12 like edutopia or any other project that would deal with higher education. I am not trying to discourage anyone to get a university or college degree, please go do it, but at the same time use the internet wisely and learn to find the correct source for information.
In my experience the telecommunications industry has been hurt more than helped by the companies selling networking and telecommunications equipment on their lack of guidance for their employees on how to use the internet effectively. By not creating programs to educate their employees about where to get information, how to get it, how to identify that is relevant for a project and most importantly if the information obtained is relevant and specific to the protocols used by their equipment.
From the last statement I would like to take people interested to start studying telecommunications and networking to start by learning one of the most important concepts in computer networks, that is the OSI model of seven layers, will not talk much about it here please read wikipedia article for OSI. That is the best map one can start looking to get immersed onto today's world of computer network and telecommunications including wireless communications.
There are 2 more important things to say, one is that all the information about telecommunications is freely available from many standardization bodies, some others are not free but also available. For example OSI would not make their standards free but the ITU X series does. There are many organizations where one can get a wealth of information and one should start looking at least at the references from the Wikipedia page:
  1. ^ ITU-T X-Series Recommendations
  2. Jump up ^ "Publicly Available Standards". Standards.iso.org. 2010-07-30. Retrieved 2010-09-11.
  3. ^ Jump up to: a b X.800 : Security architecture for Open Systems Interconnection for CCITT applications
  4. Jump up ^ "ITU-T Recommendation X.224 (11/1995) ISO/IEC 8073".
  5. Jump up ^ Grigonis, Richard (2000). Computer telephony encyclopedia. CMP. p. 331. ISBN 9781578200450.
  6. Jump up ^ ITU-T Recommendation Q.1400 (03/1993), Architecture framework for the development of signaling and OA&M protocols using OSI concepts, pp 4, 7.
  7. Jump up ^ ITU Rec. X.227 (ISO 8650), X.217 (ISO 8649)
  8. Jump up ^ X.700 series of recommendations from the ITU-T (in particular X.711), and ISO 9596
  9. ^ Jump up to: a b CISCO Cisco Systems, Inc. Internetworking Technology Handbook OSI Model Physical layer
  10. Jump up ^ 3GPP TS 36.300 : E-UTRA and E-UTRAN Overall Description, Stage 2, Release 11
  11. Jump up ^ RFC 3439
  12. Jump up ^ http://tools.ietf.org/html/rfc3439#section-3 
Here I will start talking about the  standards one should be looking at and why listed in order of appearance from the above list taken from the reference section of the wikipedia page of the OSI model.
1. ITU-T X series:
ITU (International Telecommunication Union) is the United Nations specialized agency for information and communication technologies – ICTs. They divide their work in series X are for data networks and the webpage you want to find these series and all others is ITU
2. OSI The international Organization for Standardization. Freely available standards are  here.
3. There are really good books out there. I personally study telecommunication in college using the Computer Networks book by Andrew Stuart Tanenbaum, David J. Wetherall
 Cisco is also a good source of free information, believe it or not yes CISCO, Juniper and many other vendors of networking equipment put all their product information freely available online. Many of the product manuals introductions are a good source of networking and telecommunications information. A bit old but still relevant is the informa IT SS7 book from available here.
4. 3GPP.   Learn all that there is to learn about the forest of cellular network communications. What is 1G, 2G(GSM-GPRS), 3G (UMTS), 4G (LTE). The 4 major groups of the standards are grouped in a logical way working on specifications for RAN, System Aspects (Admin, Billing, Inter op, etc), core Network and Terminals and GERAN which are the set of standards to evolve GSM/EDGE which are basically RAN and other specifications that can be consider the origins from where the first 3 groups of standards evolved. The specifications are grouped not by working group but by series and they are shown here. The best place to start reading about how the mobile operators can provide data over your phone is by reading 22.060 and 23.060 standards. Just click under each release in the column where it reads ETSI, and under click reference to download.
5. RFCs a great place for all the internet related documentation: definitions, protocols, history of networks including TCP/IP. Look at a good list of definitions on RFC 1208, history of the internet with timeline can be read at RFC 2235. The best place to search using work match or RFC number is at the RFC Editor webpage

There are many other places to look for good information and more standards on wireless and wire-line networks: IEEE, ANSI-ATIS , 3GPP2.
For now this should be enough to start, and if you want a link to good videos for classes on telecom that are free videos from reputable companies dedicated to training. Like lteworld.org and lteuniversity.com from award solutions. 
I hope this blog and many to come would help you to dive into the sea of free information that is available that is accurate and complete. Try not to get into forums and ask questions to people, they all got their knowledge from one of the sources I mention here. Read, read, read.