User's Manual

CHAPTER 3. SPI-2213 Architecture

3-20

3.3.2 Call Control (CC) Block

The CC block caries out the resource management function of the SPI-2213 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:

Figure 3.13 CC Block Structure

RRC as the resource manager of the SPI-2213 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 SPI-2213.

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 SPI-2213 and is activated on the

MMA-G. The RRC interfaces with ACR outside the system and the RSC and OAM blocks

inside the system.

Main functions of RRC are as follows:

y ACR Keep Alive

y RSC Keep Alive

y Inter Carrier Load Balancing

y Paging Message Transmission

y System Resource Management

MMA-G

RRC

1) RAS signaling interface

2) RAS state monitoring

RSC

1) RAS signaling interface

2) Modem control interface

RTC

1) RAS traffic interface

2) Modem traffic interface

MRA-F