5.4 Display requirements

22.2203GPPRelease 17Service requirements for Home Node B (HNB) and Home eNode B (HeNB)TS

Tools: ARFCN - Frequency Conversion for 5G NR/LTE/UMTS/GSM

5.4.1 CSG Type

The CSG Type is an indicator provided by the UE that is configured by the operator.

It shall be possible for the operator to associate a CSG identity in the UE’s Allowed CSG List or the Operator CSG List with a CSG Type. Therefore, it is possible that a CSG identity stored in different UEs may either be associated with the same CSG Type or with different CSG Types.

NOTE: The CSG Type allows, for example, information on the applied billing regime to be given to the user.

When a UE camps on a cell with a CSG identity that is part of the UE’s Allowed CSG List and or the Operator CSG List has an associated CSG Type, a UE that has a display capability shall provide the user with the associated CSG Type. A UE that does not have a display capability may provide the CSG Type by other means, e.g. voice notification.
If the CSG Type for a CSG identity has not been configured in the UE, the UE may provide the HNB Name instead. In this case, the user is notified that the UE is providing the HNB Name rather than CSG Type.
It shall be possible to store the CSG Type in the USIM. As an option, the CSG Type may be stored in the ME. If the CSG Type is present in the USIM, a CSG Type stored in the ME shall be ignored. If the CSG Type is present in the Operator CSG list, a CSG Type present in the Allowed CSG list shall be ignored.
The CSG Type shall be stored in text and/or graphical format. When the CSG Type has a text component, the CSG Type text length shall not exceed 12 characters in any language.

5.4.2 HNB Name

HNB Name is a common name referring to HNB/HeNB as defined in TR 21.905 [1].

– It shall be possible for a CSG cell and for a hybrid cell to broadcast a HNB Name in free text format. The UE may display the HNB Name when camping on the cell where it is broadcasted. The HNB Name, if broadcasted or stored in the UE, shall be available to the user during manual CSG selection. The HNB Name shall be configurable by the operator or the H(e)NB Hosting Party at the discretion of the operator.

– The HNB Name length shall not exceed 48×8 bits.

NOTE 1: In order to allow the maximum flexibility in the way the HNB Name is configured in any language, UTF-8 coding should be used; this allows a maximum length of 48 characters coded on one byte, 24 characters on two bytes, 16 characters on 3 bytes down to a minimum of 12 characters if all characters are encoded on 4 bytes.

– If available and depending on operator preferences a HNB Name may be stored together with the associated CSG Identity in the UE’s Operator CSG List.

– If available and depending on operator preferences a HNB Name may be stored together with the associated CSG Identity in the UE’s Allowed CSG List.

– A HNB Name present in the Operator CSG list shall take precedence over a HNB Name present in the Allowed CSG list, which in turn shall take precedence over the broadcasted HNB Name.

NOTE 2: The UE’s Operator CSG List and Allowed CSG List are stored on the USIM or, optionally, in the ME as specified in section 5.3.2.

NOTE 3: The HNB Name is necessary in order to aid the user in choosing the correct CSG identity when performing a manual CSG identity selection.