Nokia says that it has filed claims in the United States and Germany alleging that products from HTC, RIM and Viewsonic infringe a number of its patents. Nokia’s actions include a complaint to the US International Trade Commission (ITC) against HTC, suits against HTC and Viewsonic in the Federal District Court of Delaware, against HTC and RIM in the Regional Court … Read more
MIMO & Cell Traffic in LTE The Tx Div can be applied on all the physical channels: Physical DL Shared Channel (PDSCH) Physical Broadcast Channel (PBCH) Physical Control Format Indicator Channel (PCFICH) Physical Downlink Control Channel (PDCCH) The other MIMO schemes are only applicable to the PDSCH Like the MIMO required a UE-specific feedback (RI … Read more
MIMO-MU = Multi user It is used only in Uplink. MIMO-MU does not increase the individual user’s data rate but it does offer cell capacity gains that are similar to, or better than, those provided by MIMO-SU. The UE does not require the expense and power drain of two transmitters, yet the cell still benefits … Read more
MIMO = Multiple Input Multiple Output 2 or more transmitters and 2 or more receivers. MIMO transmits several streams whereas SIMO or MISO transmits only one stream. If there are N streams, there will be at least N antennas (here only 2). By spatially separating N streams across at least N antennas, N receivers will … Read more
Nokia Siemens Networks says that it has won a LTE contract from Japan’s Softbank Mobile. Softbank Mobile expects to offer LTE services in autumn 2012. Under a separate contract, Nokia Siemens Networks will also expand Softbank Mobile’s HSPA+ network to enable new services using the recently allocated 900 MHz frequency band. Nokia Siemens Networks will … Read more
Google has reported a 61% rise in its first quarter profits of US$2.89 billion, on a 24% rise in revenues to US$10.65 billion. The rise in revenues was despite a 12% decline in the cost per click of adverts placed on its websites, and those of advertising partners (which includes this website). “Google had another … Read more
H-ARQ Mechanism in DL 1. The Transport block is transmitted to the UE on the PDSCH. 2. The UE receives it but it is erroneous. The TB is stored in a buffer. 3. The UE transmits directly a NACK concerning the erroneous block on the PUCCH. One HARQ entity in the UE and the e-UTRANMade … Read more
India’s telecoms regulator has ordered two mobile networks, Etisalat DB and STel to restart their mothballed networks within three days. The two companies lost their licenses when the Supreme Court cancelled the 2008 GSM license allocation, and announced that they would close their services as a result. However, the TRAI has told them to keep … Read more
Nokia has issued a warning that its Devices & Services division will post a financial loss for the first-quarter of this year. Nokia says that during the first quarter 2012, multiple factors negatively affected its Devices & Services business to a greater extent than previously expected. The company said that competitive industry dynamics, negatively affected … Read more
India’s Bharti Airtel says that it has launched the country’s first commercial LTE service in Kolkata. Airtel’s 4G network was launched by Mr. Kapil Sibal, Hon’ble Minister of Communications and Information Technology, Government of India. Commenting on the launch, Mr. Sunil Bharti Mittal, Chairman and Managing Director, Bharti Airtel said, “We are delighted to now … Read more