The government of South Korea is looking to pump as much as $ 1.5 billion in the development of mobile networks based on 5G . Ministry of Science, ICT and Future Plans of the country said it was looking to develop and begin studies 5G service until 2017 , with the expectation that commercial services … Read more
Typically, the data rate available at the radio interface is lower than the data rate available on the network interfaces. Thus, when a certain rate data service is higher than the data rate of the LTE radio interface, this leads to buffering in the UE and the eNodeB. This buffer allows the programmer to the … Read more
UE Accessibility Verification If the best cell on the LTE frequency have banned or are protected, up to exclude This cell from cell selection list. In that case may consider UE the cell on the same frequency, if banned cell indicates (by using fields ‘ intraFreqReselection ‘ in SIB1), intra-frequency selection is not allowed for … Read more
Here I write on LTE TDD Specific Frequency Planning Considerations. What to consider and why for TDD Frequency Planning. It is very common for telecom Operators within the TDD band of LTE have a wider unpaired spectrum than the bandwidth defined maximum carrier bandwidth of 20MHz. As a result, the selection of carrier bandwidth for … Read more
The E-UTRAN can configure the UE to report measurement information to support the control of UE mobility. The following measurement configuration elements can be signaled via the RRC Connection Reconfiguration message. E-UTRAN may configure the UE to report measurement information to support the control elements mobility. Following measurement configuration message can be supplied via the … Read more
Multiple antennas in LTE may also be used to transmit the same signal appropriately weighted for each antenna element such that the effect is to focus the transmitted beam in the direction of the receiver and away from interference, thereby improving the received SINR. The beam-forming weight vector should increase the antenna gain in the … Read more
Spatial multiplexing is where multiple independent streams are transmitted across multiple antennas. If the receiver also has multiple antennas, the streams can be separated out using spatial multiplexing. Instead of increasing diversity, multiple antennas in this case are used to increase the data rate or capacity of the system. In a rich multipath environment, the … Read more
The LTE Ray Tracing Model involves analyzing electric wave propagation by using the ray tracing method and obtaining the field strength of received signals through theoretical calculation. Some LTE network uses the higher part of the UHF band such as 2.3 GHz and 2.6 GHz. The wavelength of the radio wave is several centimeters. Therefore, … Read more
The standard propagation model is a model (deduced from the Hata formula) particularly suitable for predication in the 150MHz~3500MHz band over long distance (1Km<d<20Km) and is very adapted to GSM900/1800, UMTS, CDMA2000, WiMAX and LTE technologies. This model uses the terrain profile, diffraction mechanisms (calculated in several ways) and take into account clutter classes and … Read more
Cost231-Hata model can be used in macro cells as the propagation model. The application range is as follows: Frequency band: 1500 MHz to 2000 MHz Base station height: 30 meters to 200 meters. The base station must be higher than the surrounding buildings. Terminal antenna height: 1 meter to 10 meters Distance between the transmitter … Read more