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understand 5G RAN  Overview We are covering basic understanding on RAN element and details from 5G technology/ specs. The content is organized, to provide consumable information for reader to help increase their understanding on RAN. The page covers basic terminology, concepts and 3gpp roadmaps and features for RAN functionality. Hope my attempt to explain things as simple as possible and help you leave with acquisition and understanding of some concepts or least with touch points. This (#RAN) has been and remains to be crucial/ complex part of telecom network as rest of network is getting simplified by moving from more sophisticated protocols/ framework to generic and open standards by 3GPP body. 1. Terminology #  Radio -------- Element Name ----------- Core 1/  LTE      -----     eNodeB/ eNB ------- LTE 2/  LTE      -----     ng-eNB       ------- 5G NR 3/  5G NR  -----    en-gNB        ------- LTE 4/  5G NR  -----    gNB             ------- 5G NR The RAN traditionally used to consist

 Developer Tips ------------ create cscope and tags to source code -------------- Create CTAGS, CREATE FILE LIST [cscope.files], start cscope where the cscope.file exist. cscope steps - ctags -R . ; find . -name *.[CchH] > cscope.files ; cscope # ready to start using cscope. Using Ctrl+] Ctril+T for moving forward/ backwards. ---------------------------------------------------------- Setting up messages file log rotation on linux 1. # su - $ change to root account 2. # go to /etc/logrotate.d    # delete the line (/var/log/messages) from file syslog sed "/message/d" /etc/logrotate.d/syslog > /tmp/tmpsyslog && mv /tmp/tmpsyslog /etc/logrotate.d/syslog OR grep -v "message" /etc/logrotate.d/syslog > /tmp/tmpsyslog && mv /tmp/tmpsyslog /etc/logrotate.d/syslog 3. #create new file and add below content to limit the file rotate on 20M file size or weekly once which is satisfied cat <<EOF > /etc/logrotate.d/messageslog /var/log/messages {  

3gpp UE Identities IMSI # MSISDN # External Identifier # IP address # IoT # 5G # 6G IMSI # (15 Digits/ E.164/ ) The IMSI number is subscriber identification with given operator/ network (PLMN) with a maximum length of 15 digits. The IMSI is consists of an MCC (Mobile Country Code), an MNC (Mobile Network Code), and an MSIN (Mobile Subscriber Identity)  formation IMSI (15) = MCC (3) + MNC (2-3) + MSIN (9-10) format - TBCD format MSISDN format (15 digits/ E.164/ TBCD Format) The ITU-T recommendation E.164 limits the maximum length of an MSISDN to 15 digits. wherein 1-3 digits are reserved for country code. Prefixes are not included (e.g., 00 prefixes an international MSISDN when dialing from Sweden). http://www.3gpp.org/wiki/index.php?title=Current%20Capacity%20of%20IMSI%2C%20MSISDN%2C%20and%20IPv6%20Identifiers https://www.linkedin.com/pulse/mobile-numbering-basics-explained-imsi-vs-msisdn-atte-miettinen/ From 3GPP TS 23.003:  IMSI : No more than 15 digits. Is composed of three fields:

interface bonding (reference - https://wiki.linuxfoundation.org/networking/bonding) purpose - to provide always connected / seamless connectivity service The Linux bonding driver provides a method for aggregating multiple network interfaces into a single logical bonded interface  => source code available in drivers/net/bonding directory bonding driver creates a logical network interface by using multiple physical network interfaces underneath Bonding provides benefits such as link aggregation (bandwidth), redundancy (availability) etc.  Upper layers communicate through the logical bond interface which has an IP address but eventually the active physical interface(s) communicate thus hiding the actual interface. Permanent Address of physical link (virtual link does not have it) command - ethtool -P eth01 Permanent address: 2c:59:77:95:22:11 The real/ physical port/ interface has Interrupts and Permanent Address (MAC), verify using ifconfig command, something like this "Interrupt

 Rajasthan Festivals and Rituals शीतला अष्टमी होली के आठवें दिन उत्तर भारत के अधिकांश घरों में शीतला अष्टमी मनाई जाती है. यह पर्व शीतला माता को समर्पित है. शीतला माता चेचक, हैजा जैसे रोगों से रक्षा करती हैं. शीतला अष्टमी को बसोड़ा भी कहा जाता है. इस दिन घर में ताज़ा खाना बनाना वर्जित माना जाता है. अभय मुद्रा में विराजमान हैं शीतला माता शीतला माता को चेचक जैसे रोग की देवी माना जाता है. यह हाथों में कलश, सूप, मार्जन (झाड़ू) और नीम के पत्ते धारण किए होती हैं. गर्दभ की सवारी किए हुए यह अभय मुद्रा में विराजमान हैं. हर साल होली के त्योहार के आठवें दिन शीतला अष्टमी मनाई जाती है. कई जगह पर ये सप्तमी तिथि को भी मनाई जाती है. उत्तर भारत के अधिकांश घरों में शीतला अष्टमी के दिन व्रत और शीतला माता की पूजा अर्चना की जाती है. शीतला अष्टमी को बसोड़ा भी कहा जाता है. यह शीतला माता का पर्व है इसलिए इस दिन शीतला माता की सच्चे मन से आराधना करने से चेचक, खसरा हैजा जैसे संक्रामक रोग नहीं होते हैं. ये देवी इन बीमारियों के प्रकोप से बचाती है. इस दिन माता को बासी पकवान चढ़ाने की प्रथा है. पूजा विधि : सप्तमी के

Links for information and charts on current situation on COVID-19 and damages caused to the world so far Karnataka/ Bangalore Specific COVID19 Dashboard COVID19 Dashboard - BBMP  (OLD) COVID19 Dashboard - Zone/ Containment  (OLD) COVID19 Dashboard - WAR Room and details  (OLD) COVID19 HotSpots   COVID19 Dashboard - Zones  (OLD) Charts - Around the World Google Covid-19 link Microsoft Bing Covid-19 link Coronavirus COVID-19 global cases  (Johns Hopkins) Novel coronavirus (COVID-19) outbreak timeline map  (HealthMap) Novel coronavirus infection map  (University of Washington) COVID-19 surveillance dashboard  (University of Virginia) Novel coronavirus (COVID-19) situation dashboard  (WHO)*** Coronavirus disease 2019 (COVID-19) in the US  (CDC) Geographical distribution of COVID-19 cases worldwide  (ECDC) COVID-19 coronavirus tracker  (Kaiser Family Foundation) COVID-19 coronavirus outbreak  (Worldometer) *** Coronavirus: the new disease Covid-19 explained  ( South China Morning Post ) Map