User Manual

MM-009804-001
4.5.1 Summary of Key Features
4.5.1.1 Airlink Features
The VIDA
MAX
Base Station implements the 802.16-2004 protocol to deliver an over-the-air throughput
from 4 to 19 Mbps. All communication over the wireless channel is scheduled by the base station, with
contention slots provided for the VIDA
MAX
Client to request bandwidth. A protocol with coordinated
scheduling provides significant advantages such as:
• minimizing contention between clients
• maximizing channel utilization
• enabling guaranteed bandwidth services for critical multimedia applications.
The use of a scheduling protocol also makes the network more resilient to simple denial of service attacks
that can disable other broadband networks.
Up to 16 “connections” can be established between the base station and each client in the network, with
different QoS for each connection, allowing for great flexibility when designing a network. Low priority
processes (such as email) can be mapped to best effort services while high priority processes (such as
streaming video or LMR backhaul) can be mapped to unsolicited grant services (UGS) which offer
guaranteed throughput.
4.5.1.2 Network Features
Network convergence is provided in the form of 802.16 classifier rules that ensure network level QoS
over the airlink.
Network management is provided via a browser interface to M/A-COM’s UAS. The base station
additionally supports localized SNMP management using an open MIB. Base stations may optionally be
configured as DHCP and/or TFTP servers. All VIDA
MAX
Client management can be performed over the
air.
4.5.1.3 Security Features
The VIDA
MAX
base station provides strong protection against unauthorized network access through the
use of certificates for client authentication. Authentication keys are distributed using RSA Public Key
encryption. The cryptographic methods provided by the security sublayer use DES, 3-DES, and AES
algorithms.
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