Section: 6.1.3.19 Downlink Channel Quality Report and AS RAI MAC Control Element
Content: DCQR and AS RAI MAC control element is identified by a MAC PDU subheader with LCID as specified in Table 6.2.1-2. A MAC PDU shall contain at most one DCQR and AS RAI MAC control element. It has a fixed size and consists of a single octet defined as follows (Figure 6.1.3.19-1): - R: Reserved bit, set to "0"; - AS RAI: The field corresponds to Access Stratum Release Assistance Indication as shown in Table 6.1.3.19-1. The length of the field is 2 bits; - Quality Report: For a NB-IoT UE, if npdsch-16QAM-Config is not configured, the report mapping is defined in Table 9.1.22.15-1 in TS 36.133[ Evolved Universal Terrestrial Radio Access (E-UTRA); Requirements for support of radio resource management ]  [9] and if npdsch-16QAM-Config is configured the report mapping is defined in Table 9.1.22.17-1 in TS 36.133[ Evolved Universal Terrestrial Radio Access (E-UTRA); Requirements for support of radio resource management ]  [9]. For a BL UE or UE in CE, the field corresponds to DL channel quality report as defined in TS 36.133[ Evolved Universal Terrestrial Radio Access (E-UTRA); Requirements for support of radio resource management ]  [9]. The length of the field is 4 bits. Figure 6.1.3.19-1: DCQR and AS RAI MAC control element Table 6.1.3.19-1: Values for AS RAI