【資料名稱】：UMTS/HSDPA Backhaul Bandwidth Dimensioni

【資料作者】：qualcomm

【資料日期】：May 18, 2007

【資料語言】：英文

【資料格式】：PDF

【資料目錄和簡介】：

Table of Contents
1 Introduction .....................................................................................5
2 System Model and Protocol Overheads.......................................6
2.1 System Model..............................................................................6
2.2 User Traffic streams and its impacts in backhaul load ................7
2.2.1 Iub overheads for AMR Voice Calls ............................................7
2.2.2 Iub overheads for HSDPA...........................................................8
2.2.3 Iub Common Transport Channel Backhaul Overheads...............9
2.3 Overheads due to other protocol planes .....................................9
2.3.1 Radio Network Control Plane Overheads (NBAP) ......................9
2.3.2 Access Link Control Application Protocol (ALCAP).....................9
2.3.3 Node B Element Management Interface (Itf-B) .........................10
3 Backhaul Dimensioning Algorithm.............................................11
3.1.1 Air interface capacity simulation inputs .....................................11
3.1.2 Network operation set points.....................................................13
3.1.3 Backhaul overhead input parameters........................................13
3.1.4 Backhaul bandwidth calculation ................................................13
3.1.5 Average vs. Peak Air Interface throughputs for Iub bandwidth
dimensioning .........................................................................................14
4 AMR and HSDPA Air Interface Capacity Simulation Models ...15
4.1 Network Layout .........................................................................15
4.2 Channel Modeling and link budget basic parameters................15
4.3 HSDPA simulation configurations..............................................15
4.4 HSDPA data traffic modeling.....................................................17
4.5 Relevant RLC and MAC-hs configurations................................17
4.6 AMR voice calls simulation assumptions...................................17
5 Air Interface Capacity and Backhaul Bandwidth Results ........18
5.1 Air Interface capacity simulation results ....................................18
5.1.1 HSDPA power allocation v/s voice capacity results (Type A
Graphs) .................................................................................................18
5.1.2 Full-Buffer HSDPA Cell throughput results (Type B graphs).....18
5.1.3 HSDPA Cell throughput with HTTP traffic (Type C Graphs) .....20
5.2 Backhaul Bandwidth Results.....................................................21
5.2.1 Iub Dimensioning Example: UE Category 6 case .....................21
5.2.2 Comparative backhaul requirements for Category 12, 6 and 1223
5.3 Cell Throughput Variation and its Impacts in Backhaul
Bandwidth Dimensioning ...............................................................................26
6 Summary........................................................................................28
7 References.....................................................................................29 80-W1193-1_RevA_UMTS_HSDPA_Backhaul_Bandwidth_Dimensioning.pdf (349.77 KB)