User's Manual

Mobile WiMAX Indoor RAS SPI-2210 System Description/Ed.07
© SAMSUNG Electronics Co., Ltd. 2-21
2.5.2 Protocol Stack
Protocol Stack between NEs
The figure below shows the protocol stack between NEs.
Figure 2.5 Protocol Stack between NEs
The indoor SPI-2210 interworks with MSs via R1 interface according to IEEE 802.16
standard and the interface between the indoor 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 2.6 Protocol Stack between Indoor 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 indoor 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.
16
PHY
802.16
MAC
802.16
PHY
16
MAC
GRE
(R6)
R
6
U
DP
IP
L2
L1
MS RAS
A
CR
GRE
(R6)
R
6
U
DP
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