Cellular Network Planning and Optimization Part V: GSM

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StandardizationIn addition to ready specifications 3GPP databases containtechnical discussion concerning to ongoing standard ization ofvarious topicsRelated documents are not ‘easy reading’ but they co ntain latesttechnical ideas.Companies like Nokia, NSN, Ericsson, Motorola, Sams ung, Huaweiand many others propose competing solutions (about which they havepatent applications) in standardization documents ( called contributes).Once standard release is ready companies negotiate on their share ofso-called ‘essential patents’ (patents related to st andardizedsolutions).The shares of patents give guidelines for cross-lic ensing betweencompanies. Licensing contracts define how much manu facturer pay orreceive fees when using the standardized technology in its products.Some companies (those who are not doing standardiza tionresearch/are not successful in it) may need to pay tens or evenhundreds of millions of euros per year in order to h ave a right to usecertain technologies in products they make.46
Standardization documents 3GPP databases are mostly public Easies way to find technical documents Google ‘3GPP’ and go to 3GPP main page Click ‘Technical bodies’ You find TSG (Technical Specification Group)organization Under ‘TSG GERAN’ you find GSM and itsevolution (GPRS, EDGE) radio specifications Under ‘TSG RAN’ you find WCDMA, (+HSDPA,HSUPA, LTE) radio specifications Also, if you know number of thespecification/standardization document you cangoogle it directly47
Page 1 and 2: Cellular Network Planningand Optimi
Page 3 and 4: General GSM was the first digital c
Page 5 and 6: GSM System architectureOur main foc
Page 7 and 8: Network Switching System (NSS)Mobil
Page 9 and 10: Logical channel structureGSM channe
Page 11 and 12: Channel structure FCCH = Frequency
Page 13 and 14: Frequency reuse Cluster sizes up to
Page 15 and 16: TRXA transmission/reception facilit
Page 17 and 18: Assume thatExample Operator has 5 M
Page 19 and 20: SolutionClosest cluster sizes from
Page 21 and 22: Cell categories Commonly used cell
Page 23 and 24: Frequency hopping (FH) in GSM FH me
Page 25 and 26: FH diversity gainChannel power resp
Page 27 and 28: FH StrategiesCyclic FHIn cyclic hop
Page 29 and 30: Frequency assignment problem Classi
Page 31 and 32: Frequency assignment problem in FCA
Page 33 and 34: Simplified link budgets33
Page 35 and 36: Recall: SINR and TX powersAccording
Page 37 and 38: Simple DL link budget: Illustrative
Page 39 and 40: Link budget test example We have ma
Page 41 and 42: Link budget example/RX characterist
Page 43 and 44: Allowed propagation lossAllowed pro
Page 45: How to find detailed technical info

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