G.2 Mapping between "New Inter-frequency cells" and "Multiple Frequency Info List FDD"

25.3313GPPProtocol specificationRadio Resource Control (RRC)Release 17TS

In System Information Block type 11, System Information Block type 11bis, System Information Block type 11ter and System Information Block type 12 a list of up to 80 inter-frequency UTRA cells may be broadcast in the IE "New Inter-frequency cells". Additionally, for up to 8 of the UARFCN broadcast in the IE "New Inter-frequency cells" there can be up to 8 additional overlapping UTRA Frequency bands broadcast in the IE "Multiple Frequency Info List FDD".

The following criteria regarding the signalling of the Inter-frequency cells in SIB11/11bis/11ter should be considered:

– The "Frequency info" IE should appear only once in "New Inter-frequency cells" for each UARFCN i.e. for the first Inter-frequency neighbour cell using that UARFCN. For each subsequent Inter-frequency neighbour cell having the same UARFCN, the "Frequency info" should not be included, but rather the Mandatory Default (MD) value will be used.

– All Inter-frequency neighbour cells having the same UARFCN should be listed contiguously within the IE "New Inter-frequency cells" in SIB11/11bis/11ter.

– Each occurrence of the IE "Frequency info" included in the IE "New Inter-frequency cells" will have one corresponding entry in "Multiple Frequency Info List FDD" i.e. the first "Frequency info" maps to the first entry in "Multiple Frequency Info List FDD", the second "Frequency info" maps to the second entry in "Multiple Frequency Info List FDD" and so on.

– If a specific instance of "Frequency info" included in the IE "New Inter-frequency cells" does not have any overlapping band(s), the corresponding entry in "Multiple Frequency Info List FDD" should be empty.

Example:

The following inter-frequency UTRA cells are broadcast in System Information Block type 11

– Cell1 (UARFCN A)

– Cell2 (UARFCN A)

– Cell3 (UARFCN B)

– Cell4 (UARFCN B)

– Cell5 (UARFCN C)

The following overlapping UTRA frequency bands (listed in priority order) are broadcast for UARFCN B

– UTRA frequency Band X

– UTRA frequency Band Y

– UTRA frequency Band Z

The mapping between the "Inter-frequency cell info list" and the "Multiple Frequency Info List FDD" is shown in Figure G.2.1:

Figure: G.2.1 – Overlapping inter-frequency UTRA cells