LTE Architecture The LTE (Long-Term Evolution) architecture consists of several key components: User Equipment (UE): Mobile devices like smartphones or tablets used by end-users. Evolved NodeB (eNB): Base station responsible for radio communication with the UE. It includes the radio transceiver and performs functions like encryption and modulation. Mobility Management Entity (MME): Manages UE mobility, … Read more
BCCH(Broadcast Control Channels) Downlink Only. Broadcast information of the serving cell (System Information). Transmitted on timeslot zero of BCCH carrier. Read only by idle mobile at least once every 30 secs. SCH (Synchronization Channels) Downlink Only Carries information for frame synchronization. Contains frame number and BSIC (Base Station Identity Code). FCCH (Frequency Correction Channels) Downlink … Read more
How WCDMA Interleaving ? Effect Interleaving is used to reduce the probability of consecutive bits error Longer interleaving periods have better data protection with more delay Channel coding works well against random errors, but it is quite vulnerable to bursts of errors, which are typical in mobile radio systems. The especially fast moving UE in … Read more
Functions of the cdma2000 Signaling Services Layer The Signaling Services Layer processes all messages exchanged between the mobile and the base station. These messages control such things as call setup and tear down, hand offs, feature activation, system configuration, registration and authentication. In the mobile, the Signaling Services Layer is also responsible for maintaining the … Read more
A mobile will in one of four states after it is powered on. Initialization State In the Initialization State, the mobile tunes to the first preferred RF frequency channel and attempts to decode the Pilot Channel. If a pilot is not found, the mobile tries to decode a pilot on another RF channel or … Read more
Mobile (Portable) and fixed link between the proportion of the budget, there are four major Differences. The first difference between the fixed link will have a higher budget is usually Case-antenna mobile users have more. A second difference is For certain cases the loss of body assumed. The third difference between building / vehicle penetration … Read more