User's Manual

The Base Transceiver Station
4Motion System Manual 17
 Fragmentation/ reassembly
 QoS PEP for air interface traffic
 QoS DSCP marking
 Scheduling - connections quota computation for all data delivery types
 Frame/burst building
 Power save
 Handover management
 Power control
 R1/R6/R8 functionality
 Data path mapping between R6 (GRE) and 802.16e interfaces
 Traffic authentication and encryption
 Authentication relay
 Security key receiver
 Context client/server
 ID to IP address resolution for ASN entities
The AU is built according to the Software-Defined Radio SDR approach, making it
a highly flexible platform. Utilization of this approach also enables enhancing the
BS capabilities and capacity via software upgrades only, to add more features,
and to comply with future WiMAX Forum profiles. In addition, the SDR approach
prepares the AU for adaptive beam-forming. The AU design is based on Alvarion's
programmable, off-the-shelf, cutting-edge components, in order to provide a
future-proof solution with excellent cost and performance.
The AU card interfaces with the NPU card for R6/R8 functionality, as well as
control, synchronization and management between the NPU and AU.
The AU implements four receive and transmit channels, each of them is HW-ready
for up to 20 MHz bandwidth.