Telecom Techniques Guide

How Wireless Narrowband Local-Loop Systems in Wimax ?

Naturally, the first application for which a wireless alternative was developed and deployed was voice telephony. These systems, called wireless local-loop (WLL), were quite successful in developing countries such as China, India, Indonesia, Brazil,

How Interference Diversity in GSM?

Interference is dependent on time, frequency and mobile location. Without frequency hopping, some cell planning margins must be incorporated so that sufficient service quality can still be provided in an interfered situation. By changing

High Inventory and Low Burn Rate Stalls Femtocell Market Ending 2012

ABI Research's latest forecasts for femtocells estimate largely flat volume shipments in 2012 relative to 2011. The shipments in 2012 are expected to contain 2.44 million units, similar to the 2.47 million units shipped

What is the 3GPP?

The 3rd Generation Partnership Project (3GPP) is a collaboration between groups of telecommunication associations, to make a globally applicable third generation 3G mobile phone system specification within the scope of the International Mobile Telecommunication-2000

Basic Function of Uplink & Downlink Transport Channel in LTE

Basic Function of Uplink & Downlink Transport Channel in LTE Downlink Transport Channel Broadcast Channel (BCH) A fixed TF Used for transmission of parts of BCCH, so called MIB Paging Channel (PCH) Used for

Which types of information carries By Logical Channel in LTE?

Below types of information carries By Logical Channel in LTE Control Channels Broadcast Control Channel (BCCH) :used for transmission of system information from the network to all UEs in a cell. Paging Control Channel

EPS Bearer Terminology in LTE

EPS Bearer Terminology in LTE Quality of service GBR bearer: Guaranteed bit rate Non-GBR bearer: No guaranteed bit rate Establishment time Default bearer Established when UE connects to PDN Provides always-on connectivity Always

Inter-cell interference coordination (ICIC) in LTE

Inter-cell interference coordination (ICIC) in LTE To aid downlink ICIC Relative narrowband transmission-power indicator A cell can provide this information to neighboring cells, indicating the part of the bandwidth where it intends to limit

BENEFITS OF MULTI-ANTENNA TECHNIQUES IN LTE

BENEFITS OF MULTI-ANTENNA TECHNIQUES IN LTE The availability of multiple antennas at the transmitter and/or the receiver can be utilized in different ways to achieve different aims: Multiple antennas at the transmitter and/or the

Verizon & T-Mobile Going to Swap Radio Spectrum

T-Mobile USA has announced a deal to swap blocks of radio spectrum with Verizon Wireless in 218 markets across the country. T-Mobile said the purchase will improve its spectrum position in 15 of the

How MAC Layer work’s in Wimax?

The MAC layer is oriented to the connections. Each connection corresponds to a service flow. The service flow defines the QoS parameters of PDU transmitted over the connection. The design core of the MAC

How Sub-Carrier Allocation in Wimax?

Sub-Carrier Allocation Mode 1 DL PUSC - Downlink partial Usage Sub-Channels The downlink PUSC replacement zone is unique, that must exist in the frame structure specified by the protocols. DL PUSC with all SC