Teletopix.org

The Evolved Packet Core (EPC) in 4G cellular networks is the core infrastructure responsible for managing data traffic, tracking device locations, ensuring security, and enabling seamless connectivity. It comprises key elements like the Mobility Management Entity (MME), Serving Gateway (SGW), Packet Data Network Gateway (PGW), Home Subscriber Server (HSS), Policy and Charging Rules Function (PCRF), … Read more

What is the Difference Between PCI and Cell ID in LTE? In LTE (Long-Term Evolution) networks, both PCI (Physical Cell Identity) and Cell ID are important identifiers used to uniquely identify cells within a cellular network. While they might seem similar in their function, they serve distinct purposes and are utilized in different contexts within … Read more

In LTE networks, the default bearer represents the initial connection between a user’s device and the network, primarily offering basic internet access and signaling. It comes with predefined quality of service (QoS) settings. On the other hand, dedicated bearers are dynamically created to support specific services, such as VoLTE or video streaming, by providing customized … Read more

Let me walk you through the S11 interface, which plays a crucial role in the LTE network. As we discussed in a previous post about handovers in LTE, managing seamless transitions for mobile devices is vital. The S11 interface is central to that process and much more. It connects the Mobility Management Entity (MME) to … Read more

What does the Pcfich physical control format indicator channel indicate? The Physical Control Format Indicator Channel (PCFICH) in LTE provides essential information to receiving devices (UEs) about the control format used in a particular subframe. It helps your device interpret the control information accurately and manage its communication effectively. Here’s what the PCFICH indicates: LTE … Read more

What does media access control filtering enables you to do? Media Access Control (MAC) filtering is a network security feature that allows you to control which devices can connect to your network based on their MAC addresses. MAC addresses are unique hardware identifiers assigned to devices like computers, smartphones, and routers. As in our previous … Read more

What are the 3 components of LTE network architecture? The LTE (Long-Term Evolution) network architecture consists of several components that work together to provide high-speed wireless communication. As in our previous discussion on interference management, today we’ll look at how these key components collaborate for efficient network performance. Here are the three primary components of … Read more

How does LTE mitigate interference from adjacent cells? LTE (Long-Term Evolution) is designed with several advanced features to minimize interference, especially from neighboring cells. As in our previous post, we discussed the importance of SC-FDMA for the uplink. Now, let’s see how LTE keeps interference under control through various methods, ensuring smooth and efficient communication. … Read more

Has SC-FDMA been used as a multiple access scheme in LTE systems? Yes, SC-FDMA (Single Carrier Frequency Division Multiple Access) is used in LTE systems specifically for the uplink. If you remember from our previous post on LTE protocol stacks, the uplink and downlink operate differently, and here you’re going to see why SC-FDMA is … Read more