Section: 4.4.1.1 Average DL cell PDCP SDU bit-rate
Content: a) This measurement provides the average cell bit-rate of PDCP SDUs on the downlink. This represents the ingress rate of user plane traffic to the eNodeB/RN (via X2 or S1). The measurement is split into subcounters per E-RAB QoS level (QCI). b) CC c) This measurement is obtained by accumulating the number of bits entering the eNodeB/RN, and then dividing the sum by the measurement period . The measurement is performed at the PDCP SDU level. PDCP SDUs that are forwarded over the X2/S1 to another eNodeB during handover shall be deducted from the bit count – if this results in a negative bit count the bit count shall be set to zero. Separate counters are maintained for each QCI. The sum of all supported per QCI measurements shall equal the total DL cell PDCP SDU bit-rate. In case only a subset of per QCI measurements is supported, a sum subcounter will be provided first. d) Each measurement is an integer value representing the bit-rate measured in kbit/s. The number of measurements is equal to the number of QCIs plus a possible sum value identified by the .sum suffix. e) The measurement name has the form DRB.PdcpSduBitrateDl.QCI where QCI identifies the E-RAB level quality of service class. f) EUtranCellFDD EUtranCellTDD g) Valid for packet switched traffic h) EPS i) One usage of this measurement is to support the KPI "E-UTRAN data Energy Efficiency" defined in [13].