Section: 8.7 Aggregate Maximum Bit Rate (AMBR)
Content: Aggregate Maximum Bit Rate (AMBR) is transferred via GTP tunnels. The sending entity copies the value part of the AMBR into the Value field of the AMBR (APN-AMBR) IE. AMBR is defined in clause 9.9.4.2 of 3GPP TS 24.301[ Non-Access-Stratum (NAS) protocol for Evolved Packet System (EPS); Stage 3 ]  [23], but it shall be encoded as shown in Figure 8.7-1 as Unsigned32 binary integer values in kbps (1000 bits per second). Figure 8.7-1: Aggregate Maximum Bit Rate (AMBR) The APN-AMBR for uplink and the APN-AMBR for downlink may require converting values in bits per second to kilo bits per second when the APN-AMBR for uplink and the APN-AMBR for downlink are received from an interface other than GTPv2 interface. If such conversions result in fractions, then the value of APN-AMBR for uplink and the APN-AMBR for downlink shall be rounded upwards. NOTE: The encoding in 3GPP TS 24.301[ Non-Access-Stratum (NAS) protocol for Evolved Packet System (EPS); Stage 3 ]  [23] is different from the encoding within this specification.