User's Manual

Mobile WiMAX RAS SPI-2213 System Description/Ed.02
© SAMSUNG Electronics Co., Ltd. 2-23
2.6.2 Protocol Stack
Protocol Stack between NEs
The figure below shows the protocol stack between NEs.
Figure 2.6 Protocol Stack between NEs
The SPI-2213 interworks with MSs via R1 interface according to IEEE 802.16 standard
and the interface between the SPI-2213 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 2.7 Protocol Stack between SPI-2213 and WSM
The ACR interworks with WSM in IP/UDP-based SNMP method to carry out the operation
and maintenance functions. In particular, the SPI-2213 interworks with WSM in IP/TCP-
based FTP/SFTP (FTP over SSH) method to collect the statistical data periodically,
initialize & restart the system and download software.
WSM
RAS
IP
A
pplication
FTP
TCP
SSH
FTP
TCP
SSH
L2
IP
A
pplication
SNMP
UDP
UDP
SNMP
L1
L2
L1
16
PHY
802.16
MAC
802.16
PHY
802.16
MAC
GRE
(R6)
R
6
UDP
IP
L2
L1
MS RAS ACR
GRE
(R6)
R
6
UDP
L2
L1
IP
L2
L1
802.16
PHY