Priority Level

M

INTEGER (0..15)

Desc.: This IE should be understood as "priority of allocation and retention" (see TS 23.401 [12]).

Usage:

Value 15 means "no priority".

Values between 1 and 14 are ordered in decreasing order of priority, i.e. 1 is the highest and 14 the lowest.

Value 0 shall be treated as a logical error if received.

Pre-emption Capability

M

ENUMERATED(shall not trigger pre-emption, may trigger pre-emption)

Descr.: This IE indicates the pre-emption capability of the request on other E-RABs

Usage:

The E-RAB shall not pre-empt other E-RABs or, the E-RAB may pre-empt other E-RABs

The Pre-emption Capability indicator applies to the allocation of resources for an E-RAB and as such it provides the trigger to the pre-emption procedures/processes of the eNB.

Pre-emption Vulnerability

M

ENUMERATED(not pre-emptable, pre-emptable)

Desc.: This IE indicates the vulnerability of the E-RAB to pre-emption of other E-RABs.

Usage:

The E-RAB shall not be pre-empted by other E-RABs or the E-RAB may be pre-empted by other RABs.

Pre-emption Vulnerability indicator applies for the entire duration of the E-RAB, unless modified, and as such indicates whether the E-RAB is a target of the pre-emption procedures/processes of the eNB.