MBMS Bearer Identity (1-5 bit field)
The MBMS Bearer Identity field assigns a TFI value, or a subset of a TFI value, which identifies an MBMS radio bearer on a PDCH. In case only a subset of a TFI value is assigned for the MBMS radio bearer, that subset corresponds to the most significant bit(s) of the TFI field. The length of this field is defined by the value of the Length of MBMS Bearer Identity field, whose value is defined by a 3 bit field (range 1 to 5).

The MBMS Bearer Identity field is encoded as a binary number.

Range:

1 bit field 0 to 1

2 bit field 0 to 3

3 bit field 0 to 7

4 bit field 0 to 15

5 bit field 0 to 31