Telecommunications Blog

  Both are 4G technologies designed to move data rather than voice. Both are IP networks based on OFDM (Orthogonal Frequency Division Multiplexing) technology.    WiMax is based on a IEEE standard (802.16),Depending on the spectrum alloted for WiMax deployments and how the network is configured, this can mean a WiMax network is cheaper to build.  ...

7th LTE World summit is schedule on 17-18 May 2011 at Amsterdam RAI. Features of this event will be : Now in its 7th Year! This is THE LTE event of the year! 2500+ Attendees from 100+ countries 150+ High-level speakers 120+ Exhibitors, meeting rooms & hospitality suites 100+ Operator Case Studies 50%+ Director-level and above attendance - meet the...

MIMO and MRC:-     o LTE system uses MIMO (multiple input multiple output) as advanced multiple antenna technique in order to achieve the ambitious requirements for throughput and spectral efficiency.     o maximal ratio combining (MRC) : is used to enhance link reliability in challenging propagating conditions when signal strength is ...

   Intel may be attempting to secure a spot for their mobile chips by first infiltrating the Chinese phone market. Their sources claim that Intel has submitted designs of a handset based on a version of Intel’s Atom microprocessor. The phone will be manufactured by ZTE Corp and may go on sale in China.          ...

SC-FDMA (Single Carrier Freq Domain Multiple Access) used in Up-Link in LTE.     o The system uses SC-FDMA as uplink multiple access method instead OFDMA to decrease the PAPR and power requirements.     o It offers the same degree of multipath mitigation but because the transmission is on single carrier PAPR is lower.     ...

   Following Tuesday’s release of the JAJAH App for Android, JAJAH Facebook Calls for iPhone beta released for iPhone Free Calls From iPhones to Any Facebook Friend. It's available in the US and Canada now. To make a Facebook Call: Download the JAJAH App for iPhone from iTunes Connect to Facebook Select a friend from the “online friends” list They...

   LTE technology supports manufacturer’s rated peak download speeds of up to 150 megabits per second (Mbps) and upload speeds of up to 70 Mbps.    Canadian operator TELUS has announced the plan to launch of LTE network 1st H 2012. Following field testing in 2011 and the completion of an RFP process currently underway, construction on...

   Virginia-based nTelos Wireless and Alcatel-Lucent have accomplished an end-to-end Long Term Evolution (LTE) field trial in Waynesboro, Va.    “This trial enables us to make informed decisions on how to smoothly evolve our network and incorporate 4G LTE into the existing infrastructure, particularly in terms of end-user performance,...

    Infrax Systems, Inc. (OTCBB: IFXY), a global provider of unified Smart Grid-related products and services for the Energy and Utility industries, today announced the availability of a new upgradeable WiMAX/LTE base station. This new base station option allows network operators and service providers to utilize the desirable 1.4-1.6 GHz frequencies....

   China Mobile has selected Ericsson to participate in the world’s largest TD-LTE trial network deployment to date. With the approval of the Chinese Ministry of Industry and Information Technology (MIIT), Ericsson will build trial network in the city of Shenzhen.    The approval by MIIT follows the successful completion of interoperability...

   Epitiro has completed the independent speed, latency and voice quality-of-experience analysis on a commercially available LTE network. Tests recorded peak broadband download speeds of 48Mbps (36.1Mbps mean) where as Mean latency was just 23ms.   Epitiro, at the same time, tested TeliaSonera's legacy 3G network; LTE delivered mean download...

LTE PHY layer block diagram:- We can implement LTE Physical layer Block diagram in Matlab . Frame structure: it is FDD frame which is 10ms divided into 10 subframes each of 1ms & each subframe is divided into 2 slots of 0.5 ms which carry 6 or 7 OFDM symbol...

EPS to EPC    A key feature of the EPS is the separation of the network entity that performs control-plane functionality (MME) from the network entity that performs bearer-plane functionality (SGW) with a well defined open interface between them (S11). LTE S11: -     An IP interface between MME and SGW! GTPv2 is the protocols used...

What is LTE?     3GPP LTE (Long Term Evolution) is the name given to a project that aims to improve the UMTS mobile phone and it is not a standard but it will result in the release 8 of UMTS and it can be considered the real 3.9G & invited to join the 4G family. Technical specifications:- LTE PHY layer block diagram...

    If an adversary knows certain information (IMSI, IMEI, MSISDN) about the subscriber or a mobile phone, he can then identify individual phone calls, although this does require extensive technical effort.     With the aid of IMEI it is possible to selectively filter calls out from the datastream on the mobile network radio...

     The SIM card can be protected against unauthorised access with a four- to eight-digit Personal Identification Number ( PIN). After switching on the mobile phone, the subscriber identifies himself to the card by entering this PIN. If an unauthorised person gains possession of a SIM card, he cannot use it without also knowing the PIN....

   Samsung Galaxy Tab 10.1 3G tablet with no GSM voice communication capabilities.    It supports GSM 850 / 900 / 1800 / 1900 & HSDPA 850 / 900 / 1900 / 2100 and Wi-Fi 802.11 a/b/g/n, Wi-Fi hotspot .It has been Announced in March 2011 .    It will be release in June 2011.Its dimensions are 256.6 x 172.9 x 8.6 mm .Its weight...

     AT&T and Verizon iPhone 4 owners are more than twice as likely to report dropped calls than Verizon customers, says survey .     Taken from a group of 4,068 people, the survey's results show 82 percent of Verizon subscribers being "very satisfied" versus 80 percent for AT&T. Those results are similar to an industry-wide,...

   Sony chief Sir Howard Stringer may have unintentionally given away plans for an eight-megapixel camera in the iPhone 5. During an interview with the WSJ's Walt Mossberg, he claimed that the company's camera sensor plant in Sendai had seen hit by the Japanese earthquake and that shipments of sensors to Apple would be delayed. Apple has so far...

SS7 Protocol :      The primary signaling protocol in use today is signaling systems 7(SS7), which interconnects networks such as SSP, SCP .      The SS7 Protocol stak consist in several individual protocols, including Message Transfer Part (MTP) level1,2 and 3, Integrated services Digital Network User Part, Signaling...

    The IEEE Standards Association has given its seal of approval to the next generation WiMAX standard, dubbed 802.16m. The new standard supports a “wide range of data rates in multiple user environments” and has a theoretical maximum throughput of around 300Mbps.      ” The standards group notes that 802.16m will...