User Manual

Chapter 1 - System Description The Base Transceiver Station
4Motion 18 System Manual
 Link management (network entry, basic capabilities negotiation,
authentication and registration, connection management)
 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
 IP and Ethernet convergence sublayers
 Keep-alive signaling towards the ASN-GW for enhanced service availability.
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.