Archive per tag page navigation

I used the code from this forum post Need help adding list of posts by TAG and it helped me to sort posts of a category by the tags.

But since I am trying to implement infinite scroll jquery, I need to make this paginated using

<?php if ($wp_query->max_num_pages > 1) : ?>
          <nav id="nav-below">test
          	<div class="nav-previous"><?php next_posts_link( __( '&larr; Older posts', 'intowntheme' ) ); ?></div>
			<div class="nav-next"><?php previous_posts_link( __( 'Newer posts &rarr;', 'intowntheme' ) ); ?></div>
		</nav>
    	<?php endif; ?>

after endwhile and by adding a paged query.
The last one doens’t work however. If I put
`$my_query->query(‘paged=’.$paged);’ above the while (or anywhere else) it returns all posts within the category for each tag.

So my question is: how do I make this paginated the correct way?