User's Manual

Ver.
CHAPTER 3. System Structure
2600-00FKQFGA2
1.0
Medium Access Control Block (MACB)
The MACB is the user plane call processing function of the eNB. It processes the MAC
protocol.
The major functions of the MACB are as follows:
 Mapping between the logical channel and the transport channel
 Multiplexing & de-multiplexing
 HARQ
 Transport format selection
 Priority handling between UEs
 Priority handling between logical channels of one UE
Radio Link Control Block (RLCB)
The RLCB is the user plane call processing function of the eNB. It processes the RLC
protocol.
The major functions of the RLCB are as follows:
 Transmission for the upper layer PDU
 ARQ function used for the AM mode data transmission
 RLC SDU concatenation, segmentation and reassembly
 Re-segmentation of RLC data PDUs
 In sequence delivery
 Duplicate detection
 RLC SDU discard
 RLC re-establishment
 Protocol error detection and recovery
CPS SON Agent Block (CSAB)
The CSAB supports the SON function which is performed in the eNB CPS.
The major functions of the CSAB are as follows:
 Collection of statistics regarding the mobility robustness optimization
 Collection of statistics regarding the RACH optimization
© SAMSUNG Electronics Co., Ltd.
page 42 of 72