offset in accordance with said decoded periodicity and offset configuration index and reports a ri according to the set periodicity and offset the periodicity is an integer and reporting a ri reports with equal the product of the periodicity and a period of reporting of the channel quality indicator and the precoding matrix indicator application_number US 201213566059 A description with spatial multiplexing base station evolved universal terrestrial radio access node b or enb may send multiple data streams or layers to ues in downlink transmission using the same frequency the number of such layers or streams is defined as the rank for lte rel 8 ue 109 needs to estimate the dl channel and report the recommended rank indicator ri to enb 101 ue 109 also must report the channel quality indicator cqi and the precoding matrix indicator pmi these indicators form a set of recommended transmission property to enb 109 upon receiving this feedback from ue 109 ri pmi cqi enb 101 performs corresponding downlink scheduling ri cqi and pmi are fed back from ue 109 to enb 101 on physical uplink control channel pucch both ri and a combined cqi pmi are reported periodically but with different periodicity the ri feedback periodicity is generally m ri times greater than the cqi pmi periodicity m ri is generally an integer value in addition an offset between the ri reporting subframe and the cqi pmi reporting subframe is denoted n offset ri m ri and n offset ri are jointly encoded and sent by enb 101 to ue 109 in a radio resource control rrc message for periodic rank.