LTE Blogs

You may hear it many times that the peak data rate of LTE is about 300Mbps? How is the number calculated? What are the assumptions behind? Let's estimate it in a simple way. Assume 20 MHz channel bandwidth, normal CP, 4x4 MIMO. First, calculate the number of resource elements (RE) in a subframe with 20 MHz channel bandwidth: 12 subcarriers x 7 OFDMA symbols x 100 resource blocks x 2 slots= 16800 REs per subframe. Each RE can carry a modulation symbol. Second, assume 64 QAM modulation and no coding...

After all, we are just trying to transport a simple Ethernet frame from the base station (BTS, NodeB, eNB) to the base station controller (BTS, RNC, S-GW, ASN-GW). As the cellular industry moves toward "all IP networks", they are laying the groundwork for an effective unified backhaul solution. The solution that seems to have universal acceptance is the use of "Metro Ethernet". That is the deployment of a carrier grade Ethernet network solution capable of supporting both the backhaul...

I had a student in one of my classes ask me about the "Magic 86" number (as much as I would love to insert a Harry Potter reference, I will restrain myself). After a little discussion, it became clear that she was talking about the raw physical bandwidth of LTE and how it was 86 Mbps. She was interested in understanding how this "magic" number was calculated. I thought it would be beneficial to go through the steps in calculating the uplink and downlink maximum theoretical data...

Telecom equipment maker Alcatel-Lucent (ALU.N) has won a three-year contract to help build a nationwide wireless network for privately held Canadian startup Globalive Wireless. Globalive, which is working on launching national wireless service, spent more than C$442 million ($405.5 million) on buying spectrum during a government auction held a year ago. Under the deal, Paris-based Alcatel-Lucent will supply Globalive with its 3G radio access network, including radio network controllers, base stations...

- JV to Leverage Qualcomm's Network Technology and Device Management Service, and Verizon Wireless' Network Expertise and Simplified Device Certification Process - SAN DIEGO and BASKING RIDGE, N.J., July 28 /PRNewswire-FirstCall/ -- Qualcomm Incorporated (Nasdaq: QCOM) and Verizon Wireless today announced an agreement to form a joint venture to provide machine-to-machine (M2M) wireless communications and smart services offerings across a wide variety of market segments, including healthcare...

The auction of the UHF band (700MHz) last year caused quite a stir in the industry. The “Open Access” can was opened, Google flexed muscles during the bidding process, and the analogue TV finally got the last nail in the coffin. Long after the dust had settled, I had an “Oersted-moment” during one of my Wireless Technology classes about block C of this band which is known as E-UTRA Band 13 in the 3GPP specifications. This block is assigned for LTE operations by Verizon Wireless...

Jul 17, 2009 (Close-Up Media via COMTEX) -- ALVR | Quote | Chart | News | PowerRating -- Alvarion, a provider of WiMAX and wireless broadband solutions, announced a WiMAX pilot with French operator Bollore telecom in Marina Port Vauban in the south of France. The pilot is based on Alvarion's end-to-end mobile WiMAX 4Motion solution operating at 3.5 GHz frequency band. The pilot is conducted in cooperation with the Antibes municipalities and will showcase Alvarion's end-to-end 4Motion solution...