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HUAWEI TECHNOLOGIES CO., LTD.

www.huawei.com

Huawei Confidential

Security Level:

英文标题 :40-47pt

副标题 :26-30pt

字体颜色 : 反白内部使用字体 :

FrutigerNext LT Medium

外部使用字体 : Arial

中文标题 :35-47pt

字体 : 黑体副标题 :24-28pt

字体颜色 : 反白字体 : 细黑体

Limitation of HSPA+ speed

HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential


颜色 : R153 G0 B0

内部使用字体 :




颜色 : R153 G0 B0

字体 : 黑体

英文正文 :20-22pt

子目录 (2-5 级 ) :18pt

颜色 : 黑色内部使用字体 :

FrutigerNext LT Regular


中文正文 :18-20pt

子目录 (2-5 级 ):18pt

颜色 : 黑色字体 : 细黑体

Factors on which HSPA+ speed Depends on

1.RSCP It means power received by mobile from the BTS.The value of RSCP should be <= -95 dbm

for good downloading speed. Lesser the value, greater the speed.

2.Ec/Io The value of Ec/Io for a cell shows the pilot pollution in the cell .The value of Ec/Io should be less

than equal to <= -12 for good HSPA speed. Lesser the value, greater the speed.

3.CQI(Cell quality indicator)-max value of CQI is 30.Greater the value, greater will be speed.

4.No of HS-PDSCH codes- 16 HS-PDSCH codes used in WCDMA.If no of users will increase then

no of available codes will decrease and HSPA speed will also decrease.

5.Modulation- Max Downloading speed also depends on what modulation tech. we are using. If case

of 16 QAM modulation max speed will be 14.4mbps and if we are using 64 QAM modulation then max speed will be 21.2 mbps.These values are theoretically but practically if all RF conditions are

good then max speed will be 10-11 mbps in case of 16 QAM and 17-18 mbps in case of 64 QAM.



颜色 : R153 G0 B0





颜色 : R153 G0 B0

字体 : 黑体


子目录 (2-5 级 ) :18pt





子目录 (2-5 级 ):18pt


Download Speed varies with different RF conditions



颜色 : R153 G0 B0





颜色 : R153 G0 B0

字体 : 黑体


子目录 (2-5 级 ) :18pt





子目录 (2-5 级 ):18pt


Case CQI EC/IO RSCP Scheduled Rate delta(Kbit/s) MAC Layer Rate Delta(Kbit/s) No of HS-PDSCH codes

1 27 -9.5 -75.7dbm 13224 12044 14

2 26 -9.5 -77.2dbm 11963 11373 14

3 26 -9.5 -77dbm 11813 9869 14

4 25 -9.5 -78.4dbm 10411 8142 12

5 25 -9.5 -78.8 9918 7858 12

6 24 -9.5 -82dbm 9045 7980 13

7 24 -9.5 -80dbm 9227 6793 13

Case study



颜色 : R153 G0 B0





颜色 : R153 G0 B0

字体 : 黑体


子目录 (2-5 级 ) :18pt





子目录 (2-5 级 ):18pt


Case-1 CQI 27,Ec/Io -9.5 RSCP -75.7 No of HS-PDSCH cods 14 Scheduled rate-Delta(Kbit/s) 13224.32



颜色 : R153 G0 B0





颜色 : R153 G0 B0

字体 : 黑体


子目录 (2-5 级 ) :18pt





子目录 (2-5 级 ):18pt



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