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3.3.2 Call Control (CC) Block
The CC block caries out the resource management function of the outdoor SPI-2331 and
the BS function of ASN Profile-C defined in NWG of Mobile WiMAX forum. The CC
block consists of RAS Resource Controller(RRC), RAS Service Controller(RSC) and RAS
Traffic Controller(RTC) sub-blocks and the functions of each sub-block are as follow:
CC
ULDB
RRC
1) RAS signaling interface
2) RAS state monitoring
RRC as the resource manager of the outdoor SPI-2331 exchanges the status information
with all blocks and assigns appropriate software resources to a service when it receives the
necessary service request from RAS/ACR.
RSC processes the MAC signaling via R1 interface and interworks with ACR via R6
interface. RSC performs the Call Admission Control(CAC) in the service creation process
and requests the traffic channel setup to RTC. In addition, RSC transfers the information on
the internal control message to the modem block in the outdoor SPI-2331.
RTC fragments the user data received from ACR via the R6 interface in MAC PDU format
and transfers the data to the modem block or re-assembles the MAC PDU received from an
MS via the R1 interface and transmits to ACR. In addition, the RTC interworks with the
RSC block controlling the RAS signal and performs the call setup/release procedure.
3.3.2.1 RAS Resource Controller (RRC)
RRC is in charge of the resource management of the outdoor SPI-2331 and is activated on
the ULDB. The RRC interfaces with ACR outside the system and the RSC and OAM
blocks inside the system.
RRC's main functions are as follows:
ACR Keep Alive
RSC Keep Alive
Inter Carrier Load Balancing
Paging Message Transmission
System Resource Management
© SAMSUNG Electronics Co., Ltd.
Mobile WiMAX Outdoor RAS SPI-2331 System Description/Ed.02
RSC
1) RAS signaling interface
2) Modem control interface
Figure 3.7 CC Block Structure
RTC
1) RAS traffic interface
2) Modem traffic interface
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