Mobile WiMAX frame structure Unlike Fixed WiMAX, which uses OFDM frames, Mobile WiMAX uses OFDMA frames. OFDMA allows multiple users to receive data from the base station at the same time. In this type of system, the downlink bursts from the base station are divided by a time offset and a frequency offset (sub-channel offset). … Read more
WiMAX antennas, just like the antennas for car radio, cell phone, FM radio, or TV, are designed to optimize performance for a given application. The figure above illustrates the three main types of antennas used in WiMAX deployments. From top to bottom are an omni directional, sector and panel antenna each has a specific function. … Read more
In an actual application, the system implements the modulation in this way: as shown above, I and Q channel sequences in the figure represent two channels of cyclic PN short code sequences. The cyclic period of each channel of PN short codes is 215. For different sectors, there are different starting locations of I … Read more
Handovers are a crucial aspect of LTE networks, as they ensure seamless connectivity as mobile devices move within the network. Types of Handover in LTE What are the different types of handover in LTE? Intra-frequency Handover: Description: Intra-frequency handovers occur when a mobile device moves within the same frequency band and connects to a different … Read more
Which Cell Parameters needs to Obtain in LTE? To provide the most critical information to the UEs, the eNodeB uses the BCH channel The information is sent on pre-defined time-frequency resources. This information is organized into different information blocks: The MIB, the Master Information Block. System Frame Number DL -downlink System Bandwidth Number of Transmit Antennas … Read more
Gigabit LTE – definition, class, technology, devices, availability Gigabit LTE is an important springboard for mobile 5G data connectivity. It contains a number of building blocks for the new network. Gigabit LTE is an advanced form of LTE, the 4G radio technology that mobile operators use to connect mobile devices. Gigabit class lte what is … Read more
LTE RLC Sub Layer Functions (Work of the RLC protocol in LTE): Main task of LTE RLC sub layer is transfer PDUs in three modes of LTE upper layer. RLC Sub Layer Functions Protocol Data Units (PDUs) Transfer in upper layer any of three modes: Acknowledged Mode (AM), Unacknowledged Mode (UM) and Transparent Mode (TM) … Read more
What is the difference between 4G and 4G LTE? Many people use the terms 4g and 4g interchangeably, but they are not the same. Lets find out the difference…. Features of 4g 4G is the next step above and a 3g replacement, offering faster speeds for users who stream media (such as videos or mp3s), … Read more
What is the difference between LTE and VOLTE? What is VOLTE:- Volte (voice over lte) refers to voice calls made through a 4G LTE network rather than traditional calls made using csfb (circuit-switched fall-back), a system that switches from 4g back to 2g or 3g technology before connecting calls. Worldwide, operators are currently working to … Read more
Handover Process in LTE In LTE, the handover process involves transferring a mobile device’s connection from one cell to another seamlessly. It includes the following key steps: Measurement: The mobile device continuously measures signal strength and quality from neighboring cells. Triggering: When certain threshold values are met, a handover is triggered. This can be due … Read more