GPRS air interface


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GPRS air interface
1010507 GPRS air interface
INTRODUCTION The GPRS air interface is a layered structure comprising of two distinct layers, namely Radio Frequency Layer (RFL) and Physical Link Layer (PLL). The RFL performs the modulation of the physical waveforms based on the sequence of bits received from the higher layer (i.e., PLL). On the receiving side, this layer demodulates received waveforms into a sequence of bits, which are transferred to the physical link layer for further processing. Thus, the key functions included in the RFL include the modulation/demodulation, and transmission/reception of radio blocks. The modulation/demodulation is similar to GSM and is detailed in [3GPP TS 45.004…
Citation
Sumit Kasera; Nishit Narang; A. P. Priyanka: 2.5G MOBILE NETWORKS: GPRS and EDGE. GPRS air interface, Chapter (McGraw-Hill Professional, 2008), AccessEngineering Export