Section: 6.1.3.8 Activation/Deactivation MAC Control Elements
Content: The Activation/Deactivation MAC control element of one octet is identified by a MAC PDU subheader with LCID as specified in table 6.2.1-1. It has a fixed size and consists of a single octet containing seven C-fields and one R-field. The Activation/Deactivation MAC control element with one octet is defined as follows (figure 6.1.3.8-1). The Activation/Deactivation MAC control element of four octets is identified by a MAC PDU subheader with LCID as specified in table 6.2.1-1. It has a fixed size and consists of a four octets containing 31 C-fields and one R-field. The Activation/Deactivation MAC control element of four octets is defined as follows (figure 6.1.3.8-2). For the case with no serving cell with a ServCellIndex, as specified in TS 36.331[ Evolved Universal Terrestrial Radio Access (E-UTRA); Radio Resource Control (RRC); Protocol specification ]  [8] larger than 7, Activation/Deactivation MAC control element of one octet is applied, otherwise Activation/Deactivation MAC control element of four octets is applied. For the case that Activation/Deactivation MAC control element is received and Hibernation MAC control element is not received: - Ci: if there is an SCell configured with SCellIndex i as specified in TS 36.331[ Evolved Universal Terrestrial Radio Access (E-UTRA); Radio Resource Control (RRC); Protocol specification ]  [8], this field indicates the activation/deactivation status of the SCell with SCellIndex i, else the MAC entity shall ignore the Ci field. When the Ci field is set to "1", SCell with SCellIndex i shall be activated if it is in already activated state or deactivated state, otherwise the Ci field set to "1" shall be ignored. The Ci field is set to "0" to indicate that the SCell with SCellIndex i shall be deactivated; - R: Reserved bit, set to "0". For the case that both Activation/Deactivation MAC control element and Hibernation MAC control element are received, see clause 6.1.3.15. Figure 6.1.3.8-1: Activation/Deactivation MAC control element of one octet Figure 6.1.3.8-2: Activation/Deactivation MAC control element of four octets