User's Manual

CHAPTER 2. System Overview
2-16
© SAMSUNG Electronics Co., Ltd.
Protocol Stack
y Protocol Stack between NEs
The figure below shows the protocol stack between NEs.
Figure 2.3 Protocol Stack between NEs
The SPI-2L10 interworks with MSs via R1 interface according to IEEE 802.16
standard and the interface between the SPI-2L10 and ACR is R6 interface.
The R6 signaling interface is executed on UDP/IP and the R6 traffic interface uses the
GRE tunnel.
y Protocol Stack for Operation and Maintenance
Figure 2.4 Protocol Stack between SPI-2L10 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-2L10 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)
R6
UDP
IP
L2
L1
MS RAS ACR
GRE
(R6)
R6
UDP
L2
L1
IP
L2
L1
802.16
PHY