Is it OK to have subsections with the same name? One chapter in my thesis is going to have the following style:

3.1 Topic A
3.1.1 Problem Description
3.1.2 Proposed Solution

4.1 Topic B
4.1.1 Problem Description
4.1.2 Proposed Solution


Is it OK to have subsections with the same name? Or should it rather be something like: 

3.1 Topic A
3.1.1 Topic A Problem Description
3.1.2 Topic A Proposed Solution

4.1 Topic B
4.1.1 Topic B Problem Description
4.1.2 Topic B Proposed Solution


Update:

Many thanks to all for the comments and answers. I think understand now that it's more a question about the document structure than about the subsection titles.
You typically have a great deal of freedom in deciding how to structure the presentation of your thesis.  If parallel construction is a good way to present your work, and if you aren't constrained not to by your advisor or your institution's regulations, I see no reason to prefer an overly verbose subsection title over a succinct title that happens to be the same as a subsection title in another section.