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25.433里一个可能的参数定义的错误 by James

2007-03-19 15:47:25 / 个人分类：Personal

welcome your joining.

James

[ 本帖最后由 James-Ran 于 2007-3-19 22:56 编辑 ]

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juvent 发布于2007-03-20 12:18:14: QUOTE:
原帖由 James-Ran 于 2007-3-20 11:22 发表
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1. TPC and data symbol are all spreaded in same method. If Node B know TPC error ratio, why the error ratio of data could not be known by Node B?
2. BLER map to one certain SIR for certain rad ...

要搞清一个概念，TPC的误码率的估计的，为了增加准确度。Data的BLER或者SIR是要严格跟踪的。

juvent 发布于2007-03-20 12:14:28: QUOTE:
原帖由 James-Ran 于 2007-3-20 11:22 发表

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1. TPC and data symbol are all spreaded in same method. If Node B know TPC error ratio, why the error ratio of data could not be known by Node B?
2. BLER map to one certain SIR for certain rad ...

TPC和data的编码完全是不同的，完全是两个东西。

message 发布于2007-03-20 11:28:16: you can visit "http://www.3gpp.org/ftp/tsg_ran/TSG_RAN/TSGR_19/Docs/ZIP/" to find RP-030072.zip, but it didn't give the detailed Reason for change. It's mandatory after v480.

James-Ran 发布于2007-03-20 11:22:33: QUOTE:
原帖由 juvent 于 2007-3-20 10:39 发表

TPC错误率和data error ratio完全是不同的东西。更何况功控也不是跟踪的BER。

1. TPC and data symbol are all spreaded in same method. If Node B know TPC error ratio, why the error ratio of data could not be known by Node B?
2. BLER map to one certain SIR for certain radio environment.

juvent 发布于2007-03-20 10:39:08: QUOTE:
原帖由 James-Ran 于 2007-3-20 10:22 发表
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If thus, due to same spreading operation done for data part, thus, Node B should know the data error ratio. and DL PC is not necessary. Because Node B just increase Tx power when Node B think h ...
中国通信网－无限分享!LWC3Ds

TPC错误率和data error ratio完全是不同的东西。更何况功控也不是跟踪的BER。

James-Ran 发布于2007-03-20 10:22:44: QUOTE:
原帖由 juvent 于 2007-3-20 09:57 发表

各种环境下的TPC传输误字率NodeB是知道的，NodeB可以折算传输所引起的影响。

6ssCg%]+EJ;[8PIf thus, due to same spreading operation done for data part, thus, Node B should know the data error ratio. and DL PC is not necessary. Because Node B just increase Tx power when Node B think higher ratio or other actions.

juvent 发布于2007-03-20 09:57:19: QUOTE:
原帖由 James-Ran 于 2007-3-19 21:08 发表
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I think Node B could not know the effect of its TPC command for UL.
Because sometimes, even Node B send out the TPC commands for UL, due to bad radio environment, UE could not respond this ...
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L4{y-X?各种环境下的TPC传输误字率NodeB是知道的，NodeB可以折算传输所引起的影响。

James-Ran 发布于2007-03-19 21:08:13: QUOTE:
原帖由 juvent 于 2007-3-19 19:09 发表
功控是按照SIR进行的，但是NodeB需要知道自己的功控命令对UE上行的具体影响，以使得控制更精确。W里不需要这样是因为W的功控快的多，功控的快速本省已经保证了足够的精确度。
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I think Node B could not know the effect of its TPC command for UL.
Because sometimes, even Node B send out the TPC commands for UL, due to bad radio environment, UE could not respond this TPC command or act as reverse direction. Thus how does Node B know the effect of this TPC comand sent out?
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James

juvent 发布于2007-03-19 19:09:32: 功控是按照SIR进行的，但是NodeB需要知道自己的功控命令对UE上行的具体影响，以使得控制更精确。W里不需要这样是因为W的功控快的多，功控的快速本省已经保证了足够的精确度。

James-Ran 发布于2007-03-19 18:53:08: QUOTE:
原帖由 juvent 于 2007-3-19 18:09 发表kAul2Ce_+uI4\/h
NodeB当然需要知道UL PC Step，很多算法需要用到这个值，具体算法我就不讲了，简单的说就是NodeB需要知道自己的功控命令对UE上行的具体影响。

In WCDMA, RNC don't tell this value to Node B.

But in TDS, the target is SIR, thus, Node B just order UE to increase or decrease UL power to meet this goal. Why Node B need care this step size???

Or could you post some to demostrate ypur viewpoint.
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anothers have similar thinking?.{HZ5B$D4rA

thanks,
James

juvent 发布于2007-03-19 18:09:02: NodeB当然需要知道UL PC Step，很多算法需要用到这个值，具体算法我就不讲了，简单的说就是NodeB需要知道自己的功控命令对UE上行的具体影响。