Redline Communications Inc. SC1000E 用户手册
User
BASE
STATION
Manual
Doc #70-00100-01-00-DRAFT
Proprietary Redline Communications © 2009
Page 14 of 60
January 7, 2009
2.3
Feature Details
2.3.1 IEEE 802.16e / WiMAX Compliance
The RedMAX 4C base station supports the following Certification Wave II Mobile WiMAX
System Profile:
System Profile:
- WiMAX Certification Wave 2: Profile 3A: 2.5-2.7 GHz, 5/10 MHz, TDD
2.3.2 High Availability Features
The modular design of the base station chassis provides the following High Availability
(HA) features:
(HA) features:
- Hot-swap capability for field replaceable modules
- Parallel paths with no single point of failure
- In-service software upgrade
- Fault Management: monitoring, detection, and reporting
- Checkpoint
service
2.3.3 PHY Specification
The base station is designed for 2-11 GHz operation based on the WirelessMAN-
OFDMA PHY definition in the IEEE 802.16e-2005 specifications. Refer to the system
specifications for supported frequency ranges.
OFDMA PHY definition in the IEEE 802.16e-2005 specifications. Refer to the system
specifications for supported frequency ranges.
2.3.4 OFDMA
Orthogonal Frequency Division Multiple Access (OFDMA) is a multi-user version of the
OFDM digital modulation scheme. Multiple access is achieved in OFDMA by assigning
subsets of subcarriers to individual users - allowing simultaneous transmission from
several users.
OFDM digital modulation scheme. Multiple access is achieved in OFDMA by assigning
subsets of subcarriers to individual users - allowing simultaneous transmission from
several users.
OFDMA uses the Fast Fourier Transform (FFT) algorithm to implement modulation and
demodulation functions. Using adequate channel coding and bit-interleaving, OFDMA
can perform very well in severe multipath environments, mitigate frequency selective
fading and provide high spectral efficiency.
demodulation functions. Using adequate channel coding and bit-interleaving, OFDMA
can perform very well in severe multipath environments, mitigate frequency selective
fading and provide high spectral efficiency.
2.3.5 Privacy
The base station implements IEEE 802.16e-2005 Privacy Sublayer and the NWG
Standalone Model Security Architecture. The base station provides an Authentication
Relay function to manage exchanges with an Authenticator in the ASN (Authentication
Relay Protocol-EAP), and a Supplicant function in the CPE (PKMv2-EAP). This
standards-based framework provides user/device authentication and services
authorization using off-the-shelf AAA servers.
Standalone Model Security Architecture. The base station provides an Authentication
Relay function to manage exchanges with an Authenticator in the ASN (Authentication
Relay Protocol-EAP), and a Supplicant function in the CPE (PKMv2-EAP). This
standards-based framework provides user/device authentication and services
authorization using off-the-shelf AAA servers.
2.3.6 Time Division Duplexing (TDD)
The base station system uses time division duplexing (TDD) to transmit and receive on
the same RF channel, or separate RF channels using HD-FDD (half-duplex FDD).
These are both non-contention based methods for providing an efficient and predictable
two-way PTP or PMP cell deployment. All uplink and downlink transmission scheduling
is managed by the base station. The base station sends data traffic to subscribers, polls
for grant requests, and sends grant acknowledgements based on the total of all traffic to
all subscribers.
the same RF channel, or separate RF channels using HD-FDD (half-duplex FDD).
These are both non-contention based methods for providing an efficient and predictable
two-way PTP or PMP cell deployment. All uplink and downlink transmission scheduling
is managed by the base station. The base station sends data traffic to subscribers, polls
for grant requests, and sends grant acknowledgements based on the total of all traffic to
all subscribers.