n UL-SCH containing a C-RNTI MAC Control Element (CE) or CCCH SDU, submitted from an upper layer and associated with the UE Contention Resolution Identity, as part of a random access procedure [10]. The various temporary identifiers in 3GPP LTE are conceptually similar to station identifiers, as well as MAP information elements in IEEE 802.16m systems that are used to identify the users and their active connections and allocations in the downlink and uplink. Table 7-1 Various Radio Network Temporary Identifiers and their Usage in 3GPP LTE [10] Radio Network Temporary Transport Logical Identifier Usage Channel Channel Paging RNTI (P-RNTI) Paging and system information change notification System Information RNTI (SI-RNTI) Broadcast of system information DL-SCH Random Access RNTI (RA-RNTI) Random access response DL-SCH Temporary C-RNTI Contention resolution (when DL-SCH no valid C-RNTI Is available) Temporary C-RNTI Msg3 transmission UL-SCH CCCH, DCCH, Cell RNTI (C-RNTI) Dynamically scheduled unicast DL-SCH, DCCH, transmission UL-SCH C-RNTI Triggering of PDCCH-ordered random access Semi-Persistent Scheduling C-RNTI Semi-persistently scheduled DL-SCH, DCCH, unicast transmission UL-SCH (activation, reactivation, and re-transmission) Semi-Persistent Scheduling C-RNTI Semi-persistently scheduled unicast transmission (deactivation) Transmit Power Control-Physical Physical layer uplink power Uplink Control Channel-RNTI control (TPC-PUCCH-RNTI) Transmit Power Control-Physical Physical layer uplink power Uplink Shared Channel-RNTI control (TPC-PUSCH-RNTI) CHAPTER 7 The IEEE 802. 16m MAC CPS (Part II) 7.4.3 3GPP LTE RLC Sub-Layer The functions of the RLC sub-layer are controlled by the RRC sub-layer and are performed by the RLC entities. For each RLC entity configured at the eNB, there is a corresponding RLC entity configured at the UE. As shown in Figure 7-22, an RLC entity receives RLC SDUs from upper layers and sends RLC PDUs to its peer RLC entity via lower layers. An RLC PDU can either be an RLC data PDU or an RLC contr