CONTENTS

 

REPORT  ITU-R  F.2060     3
Fixed service use in the IMT-2000 transport network     3
 1     Introduction  3
 2     Scope  4
 3     References  4
 4     List of acronyms  4
 5     Structure of IMT-2000 transport network  6
        5.1     Example of the hierarchical levels in IMT-2000 transport network  6
        5.2     Capacity and hop length requirements in the transport network  7
        5.3     Transportation media used in the transport network  7
 6     FS applications within IMT‑2000 transport networks  8
        6.1     Characteristics of FS bands  8
                  6.1.1     Information on possible frequency bands for IMT-2000 transport networks  8
                  6.1.2     Impact of rain  10
        6.2     Technical requirements for P-P and P-MP systems  10
                  6.2.1     Maximizing spectrum utilization  11
                  6.2.2     Traffic handling capability  11
                  6.2.3     Transport mechanism   12
                  6.2.5     Protection  12
        6.3     Density of P-P links in the IMT-2000 transport network  12
        6.4     Comparison of the topology and the band characteristics  13
                  6.4.1     Comparison of the topology and band characteristics described in § 6.1 (without taking into account other factors)     13
                  6.4.2     Other factors to be taken into account when considering bands for the IMT‑2000 infrastructure     14
        6.5     Upgrade of existing 2G links into 3G links  14
                  6.5.1     Evolution of 3G networks  14
                  6.5.2     Technology limitations  14
                  6.5.3     System gain  15
                  6.5.4     Location sharing  16
        6.6     Infrastructure sharing between 3G operators  16
 7     Frequency assignment aspects  16
        7.1     Use of 2G assignments/conversion of assignments into 3G   16
                  7.1.1     Possible changes in core network frequency requirements  16
                  7.1.2     Possible changes in access network frequency requirements  17
        7.2     Block assignments/Inter-operator protection measures  17
                  7.2.1     Advantages and disadvantages of block assignments  18
                  7.2.2     Inter‑operator protection measures in block assignment scenarios  18
                  7.2.3     Examples of assignment methods  20
                  7.2.4     Summary of assignment aspects  20
 8     Overall summary  20
Annex 1  Detailed topology of the IMT-2000 transport network     21
 1     Connection between BS and CS stations  21
        1.1     P-P Applications  21
        1.2     P-MP applications  23
 2     Transport network structures between the CS and the core network  25
Appendix 1  to Annex 1  LoS probability simulations between node stations in the sub-network structure     26
Annex 2  Examples for estimation of FS spectrum requirements for IMT-2000 networks in urban areas     27
 1     Glossary of notation and acronyms  27
 2     Introduction  28
 3     General overview of an IMT-2000 network  28
 4     Estimation of the micro cell radius  29
 5     Cluster model 31
        5.1     General 31
        5.2     Cluster design  31
 6     Layout of a transmission network  32
        6.1     General 32
        6.2     Some definitions for simulation work  32
                  6.2.1     Unit bandwidth BU  32
                  6.2.2     Bandwidth of required frequency spectrum BT  33
                  6.2.3     Frequency band  33
                  6.2.4     Level at receiver input 33
                  6.2.5     C/I requirements  34
                  6.2.6     Polarization  34
        6.3     Layout of a transmission network  34
                  6.3.1     Structure 1  34
                  6.3.2     Structure 2  35
                  6.3.3     Structure 3  36
        6.4     Summary of the different structures  37
Annex 3  Impact of rain on the IMT-2000 transport network     39
 1     Mobile transport networks in Europe  39
 2     Comparison of the impact of rain on the use of FS  40
        2.1     Calculation of the margin as a function of the hop length  40
        2.2     Results of the calculations in Zones E, M, N, P and Q   41
 3     Existing case in the French overseas departments  42
Annex 4  Examples of frequency assignments in some countries     43
 1     Block assignment method in Norway  43
 2     Link by link assignment procedure in the United Kingdom   44