LTE cell search and cell selection procedure

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for your reference...

[adewijaya]

Rohde & Schwarz Cell search and cell reselection procedure in UMTS LTE

Table of Contents

1 Motivation ................................................................................... 4

2 LTE cell search and cell selection procedure .......................... 6

2.1 LTE Initial Access ..............................................................................................6

2.2 Initial synchronization.......................................................................................6

2.2.1 Step I – Primary Synchronization Signal ........................................................7

2.2.2 Step II – Secondary Synchronization Signal (SSS)......................................10

2.3 Broadcast of essential system information in LTE......................................15

2.3.1 PBCH and MIB .................................................................................................15

2.4 Difference between LTE FDD and TD-LTE.....................................................17

2.5 Cell selection and reselection criteria...........................................................19

3 R&S test solutions for LTE, focus cell search and selection 22

3.1 Why test cell search and selection performance?.......................................22

3.2 Downlink signal generation............................................................................23

3.3 Downlink signal analysis................................................................................24

3.4 R&S® CMW500 – UMTS LTE Protocol Tester ...............................................26

3.4.1 Introduction......................................................................................................26

3.4.2 Operating software for protocol tests ...........................................................29

3.4.3 Verification of cell-search & selection procedure with R&S® CMW500 ....29

3.4.3.1 PHY scenarios – Physical Layer Testing ......................................................29

3.4.3.2 IOT – Interoperability Testing.........................................................................30

3.4.3.3 Cell selection and reselection according to 3GPP TS 36.523 Part 1..........33

3.4.3.4 Cell selection and reselection according to 3GPP TS 36.521 Part 3..........34