Section: 8.51.5 Extended Macro eNodeB ID
Content: The Target Type is Extended Macro eNodeB ID for: - handover to E-UTRAN Macro eNodeB; - RAN Information Relay towards E-UTRAN; and - a TNL address discovery response of a candidate en-gNB via the S1 interface or via inter-system signalling (see clauses 22.3.6.2 and 22.3.6.3 of 3GPP TS 36.300[ Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access Network (E-UTRAN); Overall description; Stage 2 ]  [19]). In this case the Target ID field shall be coded as depicted in Figure 8.51-4. Figure 8.51-4: Target ID for Type Extended Macro eNodeB The Extended Macro eNodeB ID consists of 21 bits. The coding of the Macro eNodeB ID is the responsibility of each administration. Coding using full hexadecimal representation (binary, not ASCII encoding) shall be used. If the SMeNB flag is not set the Extended Macro eNodeB ID contains a Long Macro eNodeB ID with a length of 21 Bits. Bit 5 of Octet 9 is the most significant bit and bit 1 of Octet 11 is the least significant bit. If the SMeNB flag is set the Extended Macro eNodeB ID contains a Short Macro eNodeB ID with a length of 18 Bits. Bits 5 to 3 of Octet 9 shall be set to 0 by the sender and shall be ignored by the receiver. Bit 2 of Octet 9 is the most significant bit and bit 1 of Octet 11 is the least significant bit.