Yes you are on the right track. The usual practice is to send a currentOffset, or a page number parameter (if your entries per page is constant).
I am assuming you want to display the feed in a UITableView, and lazy-load more entries (the next page of entries) when the user scrolls to the bottom of the list. You can implement the pagination logic yourself by implementing scrollViewDidScroll: to detect that you have hit the bottom of the list, but I find NMPaginator particularly helpful for this purpose.