METHOD AND ARRANGEMENT IN A TELECOMMUNICATION SYSTEM

摘要

A METHOD AND AN ARRANGEMENT (800) IN A USER EQUIPMENT (420) FOR REPORTING CHANNEL STATE INFORMATION, CSI, AND A METHOD AND AN ARRANGEMENT (1000) IN A BASE STATION (410) FOR OBTAINING CSI ARE PROVIDED. THE USER EQUIPMENT (420) IS IN CONNECTION WITH THE BASE STATION (410) IN A CELLULAR COMMUNICATION NETWORK (400). AFTER RECEIVING A RECEIVING (702) A GRANT IN A SUBFRAME N TO BE USED FOR CSI REPORTING, FROM THE BASE STATION, THE USER EQUIPMENT DETERMINES (703) SUBFRAME TYPE OF A SUBFRAME N+P. THE USER EQUIPMENT THEN REPORTS (704) TO THE BASE STATION, CSI REFLECTING CHANNEL CONDITIONS IN THE SUBFRAME TYPE OF SUBFRAME N+P. P IS A VARIABLE VALUE.