Protocol Stack; Figure 2.4 Protocol Stack Between Nes; Figure 2.5 Protocol Stack Between Outdoor Spi-2331 And Wsm - Samsung Mobile WiMAX Outdoor RAS SPI-2331 System Description

2.5.2 Protocol Stack

Protocol Stack between NEs
The figure below shows the 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
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.
© SAMSUNG Electronics Co., Ltd.
Mobile WiMAX Outdoor RAS SPI-2331 System Description/Ed.02
16
802.16
MAC
MAC
16
802.16
16
PHY
PHY
PHY
MS

Figure 2.4 Protocol Stack between NEs

RAS
Application
FTP SNMP
SSH
UDP
TCP
IP
L2
L1

Figure 2.5 Protocol Stack between Outdoor SPI-2331 and WSM

GRE R6 GRE
(R6) (R6)
UDP
IP
L2
L1
RAS
UDP
R6
L2
UDP
IP
L1
L2
L1
ACR
WSM
Application
SNMP FTP
SSH
TCP
IP
L2
L1
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