NBS FREQUENCY AND TIME BROADCAST SERVICES - RADIO STATIONS by P. P. (Ed.) Viezbicke

By P. P. (Ed.) Viezbicke

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Lower terminal cost.  Reduced transmission of power from the mobile, making it possible to have long-lasting batteries for hand-held terminals. This book mainly focuses on indoor radio planning for 2G (GSM/DCS) and 3G (UMTS) systems. A more thorough introduction to the principles of GSM/UMTS and HSPA is appropriate and is to be found in the following sections. 2 Introduction to GSM To perform indoor GSM radio planning, the radio planner needs some basic information about the network, signaling, etc.

This noise will impact surrounding cells with interference, and therefore it is very important to limit the load in the cells to a preset maximum noise level in order to control the increase in noise. Loading a UMTS cell by 50% is equal to a 3 dB increase in noise; this is a typical value for the maximum allowable noise increase. The value can be set in the network individually for each cell. Indoor cells are more isolated from the macro layer, and can in principle be loaded relative highly, maybe up to 60–65%, giving a higher capacity.

The frequency allocation for WCDMA-TDD will vary depending on the region, and where it is possible to fit the TDD frequency band assignment into the spectrum. 1 GHz’ carriers per license. Currently there are considerations on re-using the GSM900 spectrum, by converting the ‘old’ 35 MHz GSM900 band to UMTS, raising the efficiency of the spectrum for better data performance. The 35 MHz GSM spectrum will have the possibility to support seven new UMTS WCDMA channels. Furthermore the 900 MHz band will penetrate buildings much better compared with 2100 MHz, giving better indoor UMTS coverage.

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