Alvarion Technologies Ltd. BMAX-BA36 ユーザーズマニュアル

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System Description
Chapter 1 - System Description
1.1
Introducing BreezeMAX
BreezeMAX TDD (BreezeMAX) is Alvarion's WiMAX compatible platform operating 
in Time Division Duplex (TDD) mode. It leverages Alvarion's market-leading 
knowledge of Broadband Wireless Access (BWA), industry leadership, proven field 
experience, and core technologies including many years of experience with OFDM 
technology.
Built from the ground up based on the IEEE 802.16/ETSI HIPERMAN standards, 
BreezeMAX is designed specifically to meet the unique requirements of the 
wireless Metropolitan Area Network (MAN) environment and to deliver broadband 
access services to a wide range of customers, including residential, SOHO, SME 
and multi-tenant customers. Its Media Access Control (MAC) protocol was 
designed for point-to-multipoint broadband wireless access applications, 
providing a very efficient use of the wireless spectrum and supporting difficult 
user environments. The access and bandwidth allocation mechanisms 
accommodate hundreds of subscriber units per channel, with subscriber units 
that may support different services to multiple end users. 
The system uses OFDM radio technology, which is robust in adverse channel 
conditions and enables operation in non line of sight links. This allows easy 
installation and improves coverage, while maintaining a high level of spectral 
efficiency. n the uplink the system uses OFDMA-16, supporting N x Subscriber 
Units per Symbol (N=1 to 16). Modulation and coding can be adapted per burst, 
ever striving to achieve a balance between robustness and efficiency in 
accordance with prevailing link conditions.
BreezeMAX supports a wide range of network services, including Internet access 
(via IP or PPPoE tunneling), VPNs and Voice over IP. Service recognition and 
multiple classifiers that can be used for generating various service profiles enable 
operators to offer differentiated SLAs with committed QoS for each service profile. 
The system supports also IP CS Switching Mode that is compatible with the 
infrastructure of next generation WiMAX systems, providing VPN/L2TP support 
using a DHCP proxy in the NPU . IP CS Switching Mode provides smooth upgrade 
to systems that fully support the IEEE 802.16e standard, with the same “Look 
and Feel” of service provisioning.
BreezeMAX offers an innovative solution for a Self-Install CPE, including all the 
features, embedded capabilities and supplementary tools that support easy 
installation by a non-professional user and fully automated network-entry, 
authentication and services provisioning.
The elements that enable and support the Self-Install solution include: