LTE Resource Grid Tool V1.1（更新，LTE资源栅格可视化工具） - 第3页 - 通信资料与标准下载 - 通信人家园

py555_blue

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注册：2012-3-8

41^# 大中小

发表于 2012-10-5 22:50:35 |只看该作者

LTE Resource Grid Tool_V1.1 好极了

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matrowang

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中尉

注册：2005-11-25

42^# 大中小

发表于 2012-10-12 16:23:56 |只看该作者

通信技术你问我答 (积分兑奖)

Parameter       Configuration
Frame Structure       Type 2(TDD)
System Bandwidth       20MHz
Cyclic Prefix       Normal
Downlink Antenna Port(s)       Two
Physical Cell Identity       0
CFI (Normal Downlink Subframe)       3
CFI (Special Subframe, TDD)       2
PHICH Duration       Normal
PHICH Resource       One
Subframe Assignment (TDD)       SA3
Special Subframe Pattern (TDD)       SSP1
Delta PUCCH Shift       DS2
nRB-CQI       1
nCS-AN       0
n1PUCCH-AN       10
ACK/NACK Feedback Mode (TDD)       ACK/NACK Bundling
System Frame Number (SFN)       0
PRACH Configuration Index       45
PRACH Frequency Offset       0
srs-SubframeConfig       0

PRACH Configuration Index 45
(0,0,0,0)
(1,0,0,0)
按说频域有两个位置出现PRACH，但是我用软件画不出来，不知道是否有问题？下行拷贝的是LTE_DL_RES_GRID_AP0.csv里面的内容。

点评

jeffyko Hi, Please find the updated version, 1.2. Thanks very much for pointing out this bug ------------------------------ //BUGFIX: The if statement is wrong!!! //2012-10-30 //if(first_p 详情回复发表于 2012-10-30 18:22

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reterchen

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43^# 大中小

发表于 2012-10-13 18:55:54 |只看该作者

好东西，虽然不是特别理解这个东西是怎么做出来的

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picobird

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1

44^# 大中小

发表于 2012-10-25 15:01:49 |只看该作者

更新了：（

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xicimummy

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45^# 大中小

发表于 2012-10-29 13:44:42 |只看该作者

谢谢分享，好好研究~

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jeffyko

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46^# 大中小

发表于 2012-10-30 18:22:17 |只看该作者

本帖最后由 jeffyko 于 2012-10-30 18:24 编辑

matrowang 发表于 2012-10-12 16:23
Parameter       Configuration
Frame Structure       Type 2(TDD)
System Bandwidth       20MHz

Hi,
Please find the updated version, 1.2.
Thanks very much for pointing out this bug:)  Here is the bug description:
The PRACH RE mapping for TDD is incorrect if the "Density per 10ms" is bigger than 1 and the first PRB for PRACH calculated according to 36.211 is confilict with the reserved PUCCH region calculated according to 36.211/36.213.
------------------------------
//BUGFIX: The if statement is wrong!!!
                                    //2012-10-30
                                    //if(first_prb < lower || first_prb > upper)
                                    //{
                                    //       //It can be lower or upper, but we assume to use lower here.
                                    //       first_prb = lower;
                                    //}

                                    if(first_prb < lower)
                                    {
                                             first_prb = lower;
                                    }
                                    else if(first_prb > upper)
                                    {
                                             first_prb = upper;
                                    }

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jeffyko

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发表于 2012-10-30 18:32:28 |只看该作者

本帖最后由 jeffyko 于 2012-10-30 18:52 编辑

Hi all,

Please find enclosed the updated version 1.2.

Date	Release Notes
2012/4/12	Current version is V1.0, only LTE downlink resource grid is implemented. Next version shall cover LTE uplink as well. Any questions concerning usage of the tool, please feel free to contact: jeffyko@C114.
2012/4/23	Updated to version 1.1, including: 1. fully support of LTE uplink resource grid which can be found in "UL Rresource Grid" sheet. 2. note 1, the uplink parameters can be found in 3GPP 36.331; note 2, PRACH configuration is a little tricky, please refer to "PRACH Configuration" sheet and possibly 3GPP 36.211; note 3, PRB number of PUCCH is the maximum resources required, and the unused PUCCH regions are assumed to be allocated to PUSCH; note 4, no UE-specific parameters are included in SRS, and only one cell-specific parameter: srs-SubframeConfig is considered. 3. Error-checking abillity of the tool is weak, so please make sure the configured parameters are within the valid ranges. Whenever error happens, the result is undefined.
2012/10/30	Updated to version 1.2, including a bugfix: 1. The PRACH RE mapping for TDD is incorrect if the "Density per 10ms" is bigger than 1 and the first PRB for PRACH calculated according to 36.211 is confilict with the reserved PUCCH region calculated according to 36.211/36.213. Thanks to matrowang@C114.