Samsung Mobile WiMAX Outdoor RAS SPI-2331, System Description

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Mobile WiMAX Outdoor RAS SPI-2331 System Description/Ed.02
© SAMSUNG Electronics Co., Ltd. 2-15
2.5.2 Protocol Stack
Protocol Stack between NEs
The figure below shows the protocol stack between NEs.
Figure 2.4 Protocol Stack between NEs
The outdoor SPI-2331 interworks with MSs via R1 interface according to IEEE 802.16e
standard and the interface between the outdoor SPI-2331 and ACR is R6 interface.
The R6 signaling interface is executed on UDP/IP and the R6 traffic interface uses the GRE
tunnel.
Protocol Stack for Operation and Maintenance
Figure 2.5 Protocol Stack between Outdoor SPI-2331 and WSM
The ACR interworks with WSM in IP/UDP-based SNMP method to carry out the operation
and maintenance functions. In particular, the outdoor SPI-2331 interworks with WSM in
IP/TCP-based SFTP(FTP over SSH) method to collect the statistical data periodically,
initialize & restart the system and download software.
16
PHY
802.16
MAC
802.16
PHY
16
MAC
GRE
(R6)
R6
UDP
IP
L2
L1
MS RAS ACR
GRE
(R6)
R6
UDP
L2
L1
IP
L2
L1
16
PHY
WSM
RAS
IP
Application
FTP
TCP
SSH
FTP
TCP
SSH
L2
IP
Application
SNMP
UDP
UDP
SNMP
L1
L2
L1