User's Manual

12 4Motion System Manual
Chapter 1 - System Description
1.3 The Base Transceiver Station
The 4Motion solution features a multi-carrier, high-power Base Transceiver
Station (BTS). Designed for high availability and redundancy, it utilizes a central
networking and management architecture, and a range of diversity schemes.
The BTS main features include:
 R1 support - 802.16e interface handling (e.g. PHY, MAC, CS, Scheduler, ARQ)
and processes such as handover, power control and network entry
 R6 support - communication with ASN-GW
 EAP proxy in ASN-GW mode
 Handover triggering for mobility tunnel establishment - R6 (GRE tunnel)
 Local QoS PEP for traffic via air interface (or SFM) and admission control
 Hand-Over (HO) control function
 Radio resource management agent
 Key generation (TEK, KEK) and traffic encryption
The 4Motion Base Transceiver Station includes the modular BreezeMAX shelf,
Outdoor Radio Units, GPS Receiver and other components.
1.3.1 The BreezeMAX Shelf
The BreezeMAX shelf is an indoor -48 VDC powered 8U cPCI PICMG 2.x standard
shelf prepared for installation in a 19" or 21" (ETSI) rack. This chassis has a total
of nine double-Euro (6U high) slots and six single-Euro (3U high) slots. All the