James-Ran的个人空间 http://www.cnttr.com/34443 欢迎来逛逛,聊聊技术,侃侃大山. 本人主要喜欢WCDMA/TD-SCDMA无线侧的技术，如果有何关于无线技术方面的问题，你可以给我留言，我们可以一起讨论，共同提高。 Copyright(C) James-Ran的个人空间 SupeSite/X-Space 2008-12-05 08:45:55 Why No soft handover in TD system http://www.cnttr.com/34443/viewspace_160120.html 1. Less OVSF ocdes in one cell can't afford for soft hanover in TDS.

2. same RL should be allocated in active set cells constrain the flexibility of resouces allocated by Node B.

3. Reuse factor with 1 should be defined for system fr...]]> blog James-Ran 2008-11-05 13:18:49 How many UEs could be supported in one WCDMA HSDPA Cell http://www.cnttr.com/34443/viewspace_159410.html
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I had remembered that one technical freiend ask for me: How many UEs could be supported in one cell with HDSPA's capability?

Here, I just present here and share with you.

Key point of this article is: The number is decided by the num...]]> blog James-Ran 2008-10-25 14:40:35 为何我喜欢做培训？ http://www.cnttr.com/34443/viewspace_159409.html 大学毕业参加工作后，我就申请在公司做培训工作。 当时的理由很简单，我很佩服老毛，他年轻时就当过老师。 而且当老师会让你学会如何读书。

记得刚刚开始做老师时，很紧张，往往两天的授课内容一天就被我讲的差不多了，呵呵。 后来发展到，面对再多的人，也不会...]]> blog James-Ran 2008-10-25 12:51:52 The definition of wireless coverage in network planning http://www.cnttr.com/34443/viewspace_159212.html 1. The cell coverage should be defined as similar radio environment

2. The RNC coverage should be defined as similar radio environment.

For example, it's no good if one cell coverage serve the area of street,...]]> blog James-Ran 2008-10-22 13:37:31 One idea on the deployment of wireless indoor system http://www.cnttr.com/34443/viewspace_159193.html
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In this article, I just present this new idea on wireless system deployment on indoor.

Enjoy it

and it's prefer to got your commments

J

]]> blog James-Ran 2008-10-21 15:08:52 人，这一生 http://www.cnttr.com/34443/viewspace_159085.html 最近听到谢晋的去世，晚上又看了由他导演的《牧马人》，想想人真是很有趣。

片子中的男女主角当年是那么年轻，现在也已经老了。

不管你有多辉煌的历史，但终究还是会回到原点的。

小时候，年轻的时候很希望自己快点长大，真的长大了，又发现希...]]> blog James-Ran 2008-10-20 18:12:38 The reminders on the procedure of call release http://www.cnttr.com/34443/viewspace_158967.html
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It's also important to understand the procedure of call release.
And know why this sequence will be?

here, I just summarize an...]]> blog James-Ran 2008-10-18 14:38:07 The effect on TS1(RACH) from different kind of UEs in TDS http://www.cnttr.com/34443/viewspace_158966.html
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不同手机初始化发射功率的影响

这段时间我们在做测试时，发现不同品牌的手机对TS1(RACH)的影响各有不同，特地贴出来，和大家分享。

声明： 这次测试的手机是随机从市场上购买的，测试结果只代表这些...]]> blog James-Ran 2008-10-16 16:07:44 H100A产品及应用之培训工具 http://www.cnttr.com/34443/viewspace_158863.html
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H100A可以在3G培训中发挥相当的作用。

本文就是利用H100A搭建的小型3G无线系统来进行TDS知识的学习。

sharing with you

(太多内容，空间大小限制，只贴一例）

J

 

 

]]> blog James-Ran 2008-10-15 11:45:44 网络优化之-paging interruption time http://www.cnttr.com/34443/viewspace_158766.html
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The reuse factor is changed from 1 to higher in current TDS network comparing with the original ideas.

Thus, some effects will be different with older one.

Here, I just post a sample for you.

 

Enjoy it!

...]]> blog James-Ran 2008-10-14 18:48:35