Transcript
Page 1: Gsm 3g Gprs Umts Lte Schematics

MS Block Diagram

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TRX Block Diagram

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BTS s in Standard Configuration

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BTS s in Umbrella Configuration

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BTS s in Sectored Configuration

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Block Diagram of BSC

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Possible positions for TRAU and associated trade-off

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The NSS schematic

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Abis Interface Channel Configuration – An Example

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Serial Connection of BTS s to BSC in a line topology

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Serial Connection of BTS s to BSC in a ring topology

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Connection of BTS s to BSC in a start configuration

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The OSI protocol stack on the Abis interface

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LAPD frames

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The format of an LAPD frame modulo 128

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The format of an LAPD frame modulo 8

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TEI & C/R

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Possible values of C/R bit

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Frame Types of the Abis Interface

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