User's Manual

Mobile WiMAX Outdoor RAS SPI-2210 System Description/Ed.05
© SAMSUNG Electronics Co., Ltd. 2-19
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-2210 interworks with MSs via R1 interface according to IEEE 802.16
standard and the interface between the outdoor SPI-2210 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-2210 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-2210 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.
WSM
RAS
IP
Application
FTP
TCP
SSH
FTP
TCP
SSH
L2
IP
Application
SNMP
UDP
UDP
SNMP
L1
L2
L1
16
PHY
802.16
MAC
802.16
PHY
802.16
MAC
GRE
(R6)
R
6
U
DP
IP
L2
L1
MS RAS ACR
GRE
(R6)
R
6
U
DP
L2
L1
IP
L2
L1
802.16
PHY