Sai Vellanki, you were right!
Thanks to this post Sorting of UI5 Odata binded Tables | SCN i found out that i did not managed the input parameters IT_FILTER_SELECT_OPTIONS and IT_ORDER in my methods.
Since keeping reading the DB for just sorting data seems to be too much heavy, I used the OpertationMode Client
Snippet from my view controller
onAfterRendering: function(){ var oTable = this.getView().byId("tableHu"); oTable.bindRows({ path: "huData>/ZodataHuListSet", parameters: { operationMode: sap.ui.model.odata.OperationMode.Client } }); },
Maybe it's not so elegant but it works perfectly!
Thanks again for your hint!